Skylake (microarchitecture)

Skylake^[6][7] is Intel's codename for its sixth generation Core microprocessor family that was launched on August 5, 2015,^[8] succeeding the Broadwell microarchitecture.^[9] Skylake is a microarchitecture redesign using the same 14 nm manufacturing process technology^[10] as its predecessor, serving as a tock in Intel's tick–tock manufacturing and design model. According to Intel, the redesign brings greater CPU and GPU performance and reduced power consumption. Skylake CPUs share their microarchitecture with Kaby Lake, Coffee Lake, Whiskey Lake, and Comet Lake CPUs.

Skylake

Intel Core i7-6700K with four physical cores
General information
Launched	August 5, 2015; 8 years ago (August 5, 2015)
Discontinued	March 4, 2019; 5 years ago (March 4, 2019) (desktop processors)
Marketed by	Intel
Designed by	Intel
Common manufacturer(s)	Intel
CPUID code	0406e3h, 0506e3h
Product code	80662 (mainstream and mobile Xeon E3) 80673 (enthusiast and server)
Performance
Max. CPU clock rate	Up to 5.0 GHz
Cache
L1 cache	64 KB per core (32 KB instructions + 32 KB data)
L2 cache	256 KB per core (1 MB per core for Skylake-X, SP, and W)
L3 cache	Up to 38.5 MB shared
L4 cache	128 MB of eDRAM (on Iris Pro models)
Architecture and classification
Technology node	14 nm bulk silicon 3D transistors (Tri-Gate)
Microarchitecture	Skylake
Instruction set	x86-16, IA-32, x86-64
Extensions	AES-NI, CLMUL, RDRAND, MPX, TXT, SGX^[1] MMX, SSE, SSE2, SSE3, SSSE3, SSE4, SSE4.1, SSE4.2, ADX AVX, AVX2, AVX-512 (Skylake-SP, Skylake-W & Skylake-X^[2]^[3]^[4]), TSX, FMA3 VT-x, VT-d
Physical specifications
Cores	2–28
Socket(s)	Desktop LGA 1151 LGA 2066 Server & Workstation LGA 3647 LGA 2066 Mobile BGA 1168 BGA 1356 BGA 1515 BGA 1440^[5]
Products, models, variants
Product code name(s)	SKL
Brand name(s)	Core i3 Core i5 Core i7 Core i9 Core X-Series Core m3 Core m5 Core m7 Xeon Celeron Pentium
History
Predecessor(s)	Broadwell (Tick/Process)
Successor(s)	Kaby Lake (Optimization, desktop, laptop, low-end server, and mobile workstation) Cascade Lake (HEDT, workstation, and mid- to high-end server) Palm Cove (Process)
Support status
Client: Unsupported as of December 30, 2022 for iGPU Xeon E3 v5: Unsupported as of December 30, 2022 for iGPU Other Xeon: supported

Skylake is the last Intel platform on which Windows earlier than Windows 10 are officially supported by Microsoft,^[11] although enthusiast-created modifications are available that disabled the Windows Update check and allowed Windows 8.1 and earlier to continue to receive Windows Updates on this and later platforms.^[12][13][14]

Some of the processors based on the Skylake microarchitecture are marketed as 6th-generation Core.^[15][16][17]

Intel officially declared end of life and discontinued Skylake LGA 1151 CPUs (except Xeon E3 v5) on March 4, 2019.^[18]

Development history

Skylake's development, as with previous processors such as Banias, Dothan, Conroe, Sandy Bridge, and Ivy Bridge, was primarily undertaken by Intel Israel at its engineering research center in Haifa, Israel.^[19] The final design was largely an evolution of Haswell, with minor improvements to performance and several power-saving features being added.^[20] A major priority of Skylake's design was to design a microarchitecture for envelopes as low as 4.5W to embed within tablet computers and notebooks in addition to higher-power desktop computers and servers.^[21]

In September 2014, Intel announced the Skylake microarchitecture at the Intel Developer Forum in San Francisco, and that volume shipments of Skylake CPUs were scheduled for the second half of 2015. The Skylake development platform was announced to be available in Q1 2015. During the announcement, Intel also demonstrated two computers with desktop and mobile Skylake prototypes: the first was a desktop testbed system, running the latest version of 3DMark, while the second computer was a fully functional laptop, playing 4K video.^[22]

An initial batch of Skylake CPU models (i5-6600K and i7-6700K) was announced for immediate availability during the Gamescom on August 5, 2015,^[23] unusually soon after the release of its predecessor, Broadwell, which had suffered from launch delays.^[24] Intel acknowledged in 2014 that moving from 22 nm (Haswell) to 14 nm (Broadwell) had been its most difficult process to develop yet, causing Broadwell's planned launch to slip by several months;^[25] yet, the 14 nm production was back on track and in full production as of Q3 2014.^[26] Industry observers had initially believed that the issues affecting Broadwell would also cause Skylake to slip to 2016, but Intel was able to bring forward Skylake's release and shorten Broadwell's release cycle instead.^[27][28] As a result, the Broadwell architecture had an unusually short run.^[27]

Overclocking of unsupported processors

Officially Intel supported overclocking of only the K and X versions of Skylake processors. However, it was later discovered that other non-K chips could be overclocked by modifying the base clock value – a process made feasible by the base clock applying only to the CPU, RAM, and integrated graphics on Skylake. Through beta UEFI firmware updates, some motherboard vendors, such as ASRock (which prominently promoted it under the name Sky OC) allowed the base clock to be modified in this manner.^[29][30]

When overclocking unsupported processors using these UEFI firmware updates, several issues arise:

• C-states are disabled, therefore the CPU will constantly run at its highest frequency and voltage
• Turbo-boost is disabled
• Integrated graphics are disabled
• AVX2 instruction performance is poor, approximately 4-5 times slower due to the upper 128-bit half of the execution units and data buses not being taken out of their power saving states
• CPU core temperature readings are incorrect

These issues are partly caused by the power management of the processor needing to be disabled for base clock overclocking to work.^[31]

In February 2016, however, an ASRock firmware update removed the feature. On February 9, 2016, Intel announced that it would no longer allow such overclocking of non-K processors, and that it had issued a CPU microcode update that removes the function.^[32][33][34] In April 2016, ASRock started selling motherboards that allow overclocking of unsupported CPUs using an external clock generator.^[35][36]

Operating system support

In January 2016, Microsoft announced that it would end support of Windows 7 and Windows 8.1 on Skylake processors effective July 17, 2017; after this date, only the most critical updates for the two operating systems would be released for Skylake users if they have been judged not to affect the reliability of the OS on older hardware (until July 31, 2019; August 2019 critical update requires at least Windows 10), and Windows 10 would be the only Microsoft Windows platform officially supported on Skylake and on later Intel CPU microarchitectures beginning with Skylake's successor Kaby Lake. Terry Myerson stated that Microsoft had to make a large investment in order to reliably support Skylake on older versions of Windows, and that future generations of processors would require further investments. Microsoft also stated that due to the age of the platform, it would be challenging for newer hardware, firmware, and device driver combinations to properly run under Windows 7.^[37][38]

On March 18, 2016, in response to criticism over the move, primarily from enterprise customers, Microsoft announced revisions to the support policy, changing the cutoff for support and non-critical updates to July 17, 2018, and stating that Skylake users would receive all critical security updates for Windows 7 and 8.1 through the end of extended support.^[39][40] In August 2016, citing "a strong partnership with our OEM partners and Intel", Microsoft stated that it would continue to fully support 7 and 8.1 on Skylake through the end of their respective lifecycles.^[41][42] In addition, an enthusiast-created modification was released that disabled the Windows Update check and allowed Windows 8.1 and earlier to continue to be updated on this and later platforms.^[43]

As of Linux kernel 4.10, Skylake mobile power management is supported with most Package C states supported seeing some use. Linux 4.11 enables Frame-Buffer Compression for the integrated graphics chipset by default, which lowers power consumption.^[44]

Skylake is fully supported on OpenBSD 6.2 and later, including accelerated graphics.^[45]

For Windows 11, only the high-end Skylake-X processors are officially listed as compatible.^[46] All other Skylake processors are not officially supported due to security concerns.^[47] However, it is still possible to manually upgrade using an ISO image (as Windows 10 users on those processors won't be offered to upgrade to Windows 11 via Windows Update), or perform a clean installation as long as the system has Trusted Platform Module (TPM) 2.0 enabled,^[48] but the user must accept that they will not be entitled to receive updates, and that damage caused by using Windows 11 on an unsupported configuration are not covered by the manufacturer's warranty.^[49][50]

Features

 

Skylake i7-6700K

 

Skylake i7-6700K: bottom view

Like its predecessor, Broadwell, Skylake is available in five variants, identified by the suffixes S (SKL-S), X (SKL-X), H (SKL-H), U (SKL-U), and Y (SKL-Y). SKL-S and SKL-X contain overclockable K and X variants with unlocked multipliers.^[51] The H, U and Y variants are manufactured in ball grid array (BGA) packaging, while the S and X variants are manufactured in land grid array (LGA) packaging using a new socket, LGA 1151 (LGA 2066 for Skylake X).^[52] Skylake is used in conjunction with Intel 100 Series chipsets, also known as Sunrise Point.^[53]

The major changes between the Haswell and Skylake architectures include the removal of the fully integrated voltage regulator (FIVR) introduced with Haswell.^[54] On the variants that will use a discrete Platform Controller Hub (PCH), Direct Media Interface (DMI) 2.0 is replaced by DMI 3.0, which allows speeds of up to 8 GT/s.

Skylake's U and Y variants support one DIMM slot per channel, while H and S variants support two DIMM slots per channel.^[52] Skylake's launch and sales lifespan occur at the same time as the ongoing SDRAM market transition, with DDR3 SDRAM memory gradually being replaced by DDR4 SDRAM. Rather than working exclusively with DDR4, the Skylake microarchitecture remains backward compatible by interoperating with both types of memory. Accompanying the microarchitecture's support for both memory standards, a new SO-DIMM type capable of carrying either DDR3 or DDR4 memory chips, called UniDIMM, was also announced.^[55]

Skylake's few P variants have a reduced on-die graphics unit (12 execution units enabled instead of 24 execution units) over their direct counterparts; see the table below. In contrast, with Ivy Bridge CPUs the P suffix was used for CPUs with completely disabled on-die video chipset.

Other enhancements include Thunderbolt 3.0, Serial ATA Express, Iris Pro graphics with Direct3D feature level 12_1 with up to 128 MB of L4 eDRAM cache on certain SKUs.^[56] The Skylake line of processors retires VGA support,^[57] while supporting up to three monitors connected via HDMI 1.4, DisplayPort 1.2 or Embedded DisplayPort (eDP) interfaces.^[58] HDMI 2.0 (4K@60 Hz) is only supported on motherboards equipped with Intel's Alpine Ridge Thunderbolt controller.^[59]

The Skylake instruction set changes include Intel MPX (Memory Protection Extensions) and Intel SGX (Software Guard Extensions). Future Xeon variants will also have Advanced Vector Extensions 3.2 (AVX-512F).^[3][4]

Skylake-based laptops were predicted to use wireless technology called Rezence for charging, and other wireless technologies for communication with peripherals. Many major PC vendors agreed to use this technology in Skylake-based laptops; however, no laptops were released with the technology as of 2019.^[60][61]

The integrated GPU of Skylake's S variant supports on Windows DirectX 12 Feature Level 12_1, OpenGL 4.6 with latest Windows 10 driver update^[62] (OpenGL 4.5 on Linux^[63]) and OpenCL 3.0 standards. The Quick Sync video engine now includes support for VP9 (GPU accelerated decode only), VP8 and HEVC (hardware accelerated 8-bit encode/decode and GPU accelerated 10-bit decode), and supports for resolutions up to 4096 × 2048.^[64][65][66]

Intel also released unlocked (capable of overclocking) mobile Skylake CPUs.^[67]

Unlike previous generations, Skylake-based Xeon E3 no longer works with a desktop chipset that supports the same socket, and requires either the C232 or the C236 chipset to operate.

Known issues

Short loops with a specific combination of instruction use may cause unpredictable system behavior on CPUs with hyperthreading. A microcode update was issued to fix the issue.^[68]

Skylake is vulnerable to Spectre attacks.^[69] In fact, it is more vulnerable than other processors because it uses indirect branch speculation not just on indirect branches but also when the return prediction stack underflows.

The latency for the spinlock PAUSE instruction has been increased dramatically (from the usual 10 cycles to 141 cycles in Skylake), which can cause performance issues with older programs or libraries using pause instructions.^[70] Intel documents the increased latency as a feature that improves power efficiency.^[71]

Architecture changes compared to Broadwell microarchitecture

 

CPU

• Improved front-end, deeper out-of-order buffers, improved execution units, more execution units (third vector integer ALU(VALU)) for five ALUs in total, more load/store bandwidth, improved hyper-threading (wider retirement), speedup of AES-GCM and AES-CBC by 17% and 33% accordingly.^[72][73]
• Up to four cores as the default mainstream configuration^[74] and up to 18 cores for X-series
• AVX-512: F, CD, VL, BW, and DQ for Xeon Scalable and W variants, but not Xeon E3^[3]
• Intel Memory Protection Extensions (MPX)
• Intel Software Guard Extensions (SGX)
• Intel Speed Shift^[75]
• Larger re-order buffer (224 entries, up from 192)
• L1 cache size unchanged at 32 KB instruction and 32 KB data cache per core.
• L2 cache was changed from 8-way to 4-way set associative^[76]
• Voltage regulator module (FIVR) is moved back to the motherboard
• Enhancements of Intel Processor Trace: fine grained timing through CYC packets (cycle-accurate mode) and support for Instruction Pointer (IP) address filtering.^[77]
• 64 to 128 MB L4 eDRAM cache on certain SKUs

GPU

• Skylake's integrated Gen9 GPU supports Direct3D 12 at the feature level 12_1^[6][78][79]
• Full fixed function HEVC Main/8bit encoding/decoding acceleration. Hybrid/Partial HEVC Main10/10bit decoding acceleration. JPEG encoding acceleration for resolutions up to 16,000×16,000 pixels. Partial VP9 encoding/decoding acceleration.^[80]

I/O

• LGA 1151 socket for mainstream desktop processors and LGA 2066 socket for enthusiast gaming/workstation X-series processors
• 100-series chipset (Sunrise Point)^[81]
• X-series uses X299-series chipset
• DMI 3.0 (From DMI 2.0)
• Support for both DDR3L SDRAM and DDR4 SDRAM in mainstream variants, using custom UniDIMM SO-DIMM form factor^[74][82][83] with up to 64 GB of RAM on LGA 1151 variants. Usual DDR3 memory is also supported by certain motherboard vendors even though Intel doesn't officially support it.^[84][85]
• Support for 16 PCI Express 3.0 lanes from CPU, 20 PCI Express 3.0 lanes from PCH (LGA 1151), 44 PCI Express 3.0 lanes for Skylake-X
• Support for Thunderbolt 3 (Alpine Ridge)^[86]

Other

• Thermal design power (TDP) up to 95 W (LGA 1151); up to 165 W (LGA 2066)^[87]
• 14 nm manufacturing process^[88]

Configurations

Skylake processors are produced in seven main families: Y, U, H, S, X, W, and SP. Multiple configurations are available within each family:^[52]

Feature	Family
	Y	U	H	T	S	R	X	W		SP
Max cores	2		4				18	28
Integrated L4 cache (eDRAM)		•	•			•
Low-power mobile/embedded systems	•	•	•	•
Socket	BGA			LGA 1151			LGA 2066		LGA 3647
LPDDR3 SDRAM	•	•	•
DDR3L SDRAM	•	•	•	•	•	•
DDR4 SDRAM		•	•	•	•	•	•	•
128 GB to 1.5 TB of physical RAM							•	•		•+
28 to 44 PCIe 3.0 lanes							•	•		•

List of Skylake processor models

Mainstream desktop processors

 

Core i7-6700 die shot

Common features of the mainstream desktop Skylake CPUs:

• DMI 3.0 and PCIe 3.0 interfaces
• Dual channel memory support in the following configurations: DDR3L-1600 1.35 V (32 GB maximum) or DDR4-2133 1.2 V (64 GB maximum). DDR3 is unofficially supported through some motherboard vendors^[89][90][91]
• 16 PCIe 3.0 lanes
• The Core-branded processors support the AVX2 instruction set. The Celeron and Pentium-branded ones support only SSE4.1/4.2
• 350 MHz base graphics clock rate

Processor branding and model		Cores (threads)	Clock rate (GHz)				GPU			Cache			TDP	Socket	Release date	Release price (USD)
			Base	Turbo Boost 2.0			Model	EUs	Max freq. (GHz)	L2	L3	L4 (eDRAM)
				1	2 ^[citation needed]	4 ^[citation needed]
Core i7	6700K	4 (8)	4.0	4.2	4.0	4.0	HD 530	24	1.15^[92]	1 MB	8 MB	—	91 W	LGA 1151	August 5, 2015	$339
	6785R		3.3	3.9	3.8	3.5	Iris Pro 580	72				128 MB	65 W	BGA 1440	May 3, 2016	$370
	6700		3.4	4.0	3.9	3.7	HD 530	24				—		LGA 1151	September 1, 2015	$303
	6700T		2.8	3.6	3.5	3.4							35 W			$303
Core i5	6600K	4 (4)	3.5	3.9	3.8	3.6					6 MB		91 W		August 5, 2015	$242
	6685R		3.2	3.8	3.7	3.3	Iris Pro 580	72				128 MB	65 W	BGA 1440	May 3, 2016	$288
	6600		3.3	3.9	3.8	3.6	HD 530	24				—		LGA 1151	September 1, 2015	$213
	6585R		2.8	3.6	3.5	3.1	Iris Pro 580	72	1.1			128 MB		BGA 1440	May 3, 2016	$255
	6500		3.2			3.3	HD 530	24	1.05			—		LGA 1151	September 1, 2015	$192
	6600T		2.7	3.5	3.4	3.3			1.1				35 W		Q3 2015	$213
	6500T		2.5	3.1	3.0	2.8										$192
	6402P		2.8	3.4	3.4	3.2	HD 510	12	0.95				65 W		December 27, 2015	$182
	6400T		2.2	2.8	2.7	2.5	HD 530	24					35 W		Q3 2015
	6400		2.7	3.3	3.3	3.1							65 W		August 5, 2015
Core i3	6320	2 (4)	3.9	—					1.15	512 KB	4 MB		51 W		Q3 2015	$149
	6300		3.8													$138
	6100		3.7						1.05		3 MB				October 2015	$117
	6300T		3.3						0.95		4 MB		35 W			$138
	6100T		3.2								3 MB					$117
	6098P		3.6				HD 510	12	1.050				54 W		December 27, 2015
Pentium	G4520	2 (2)	3.6				HD 530	24					51 W		October 2015	$86
	G4500		3.5													$75
	G4500T		3.0						0.95				35 W		Q3 2015
	G4400		3.3				HD 510	12	1.0				54 W		October 2015	$64
	G4400T		2.9						0.95				35 W		Q3 2015
	G4400TE		2.4												Q4 2015	$70
Celeron	G3920		2.9								2 MB		51 W			$52
	G3900		2.8													$42
	G3900TE		2.3										35 W
	G3900T		2.6

High-end desktop processors (Skylake-X)

Common features of the high performance Skylake-X CPUs:

• In addition to the AVX2 instruction set, they also support the AVX-512 instructions
• No built-in iGPU (integrated graphics processor)
• Turbo Boost Max Technology 3.0 for up to 2/4 threads workloads for CPUs that have 8 cores and more (7820X, 7900X, 7920X, 7940X, 7960X, 7980XE, and all 9th generation chips)^[93]
• A different cache hierarchy (when compared to client Skylake CPUs or previous architectures)

 

Core i7-7820X die shot

7th generation Skylake-X high-end desktop CPUs

Processor branding and model		Cores (threads)	Clock rate (GHz)			Cache		PCIe lanes	Memory support	Socket	TDP	Release date	Release price (USD)
			Base	Turbo		L2	L3
				2.0	3.0
Core i9 ^[94]	7980XE	18 (36)	2.6	4.2	4.4	18 MB	24.75 MB	44 PCIe 3.0	DDR4-2666 quad-channel	LGA 2066	165 W	Sep 25, 2017^[95]	$1999
	7960X	16 (32)	2.8			16 MB	22 MB						$1699
	7940X	14 (28)	3.1	4.3		14 MB	19.25 MB						$1399
	7920X	12 (24)	2.9			12 MB	16.5 MB				140 W	Aug 28, 2017	$1189
	7900X	10 (20)	3.3		4.5	10 MB	13.75 MB					Jun 19, 2017	$999
Core i7	7820X	8 (16)	3.6			8 MB	11 MB	28 PCIe 3.0					$599
	7800X	6 (12)	3.5	4.0	—	6 MB	8.25 MB		DDR4-2400 quad-channel				$389

9th generation Skylake-X high-end desktop CPUs

Processor branding and model		Cores (threads)	Clock rate (GHz)			Cache		PCIe lanes	Memory support	Socket	TDP	Release date	Release price (USD)
			Base	Turbo Boost		L2	L3
				2.0	3.0
Core i9 ^[96]	9990XE^[97]	14 (28)	4.0	5.0	5.0	14 MB	19.25 MB	44 PCIe 3.0	DDR4-2666 quad-channel	LGA 2066	255 W	Jan 3, 2019	OEM
	9980XE	18 (36)	3.0	4.4	4.5	18 MB	24.75 MB				165 W	Oct 9, 2018^[98]	$1979
	9960X	16 (32)	3.1			16 MB	22 MB						$1684
	9940X	14 (28)	3.3			14 MB	19.25 MB						$1387
	9920X	12 (24)	3.5			12 MB							$1189
	9900X	10 (20)	3.5			10 MB							$989
	9820X		3.3	4.1	4.2		16.5 MB						$889
Core i7	9800X	8 (16)	3.8	4.4	4.5	8 MB							$589

Xeon High-end desktop processors (Skylake-X)

• Marketed as a Xeon
• Uses the C621 chipset
• Xeon W-3175X was the only Xeon with a multiplier officially unlocked for overclocking until the introduction of Sapphire Rapids-WS Xeon CPUs in 2023.^[99]

Model	sSpec number	Cores (threads)	Clock rate	Turbo Boost all-core/2.0 (/max. 3.0)	L2 cache	L3 cache	TDP	Socket	I/O bus	Memory	Release date	Part number(s)	Release price (USD)
Xeon W-3175X	SRF6L (H0)	28 (56)	3.1 GHz	3.8/4.3 GHz	28 × 1 MB	38.50 MB	255 W	LGA 3647	DMI 3.0	6 × DDR4-2666	January 30, 2019	CD8067304237800 BX80673W3175X	$2999

Mobile processors

For mobile workstation processors, see Server processors

Processor branding and model		Cores (threads)	CPU clock rate	CPU Turbo clock rate			GPU	GPU clock rate		Cache		Max. PCIe lanes	TDP	cTDP		Release date	Price (USD)
				Single core	Dual core ^[citation needed]	Quad core ^[citation needed]		Base	Turbo	L3	L4 (eDRAM)			Up	Down
Core i7	6970HQ	4 (8)	2.8 GHz	3.7 GHz	?		Iris Pro 580	350 MHz	1050 MHz	8 MB	128 MB	16	45 W	—	35 W	Q1 2016	$623
	6920HQ		2.9 GHz	3.8 GHz	3.6 GHz	3.4 GHz	HD 530				—					September 1, 2015	$568
	6870HQ		2.7 GHz	3.6 GHz	?		Iris Pro 580		1000 MHz		128 MB					Q1 2016	$434
	6820HQ				3.4 GHz	3.2 GHz	HD 530		1050 MHz		—					September 1, 2015	$378
	6820HK
	6770HQ		2.6 GHz	3.5 GHz	?		Iris Pro 580		950 MHz	6 MB	128 MB					Q1 2016	$434
	6700HQ				3.3 GHz	3.1 GHz	HD 530		1050 MHz		—					September 1, 2015	$378
	6660U	2 (4)	2.4 GHz	3.4 GHz	3.2 GHz	—	Iris 540	300 MHz		4 MB	64 MB	12	15 W		9.5 W	Q1 2016	$415
	6650U		2.2 GHz													Q3 2015
	6600U		2.6 GHz		—		HD 520				—			25 W	7.5 W	September 1, 2015	$393
	6567U		3.3 GHz	3.6 GHz	3.4 GHz		Iris 550		1100 MHz		64 MB		28 W	—	23 W	Q3 2015	TBD
	6560U		2.2 GHz	3.2 GHz	3.1 GHz		Iris 540		1050 MHz				15 W		9.5 W
	6500U		2.5 GHz	3.1 GHz	3.0 GHz		HD 520				—				7.5 W	September 1, 2015	$393
Core i5	6440HQ	4 (4)	2.6 GHz	3.5 GHz	3.3 GHz	3.1 GHz	HD 530	350 MHz	950 MHz	6 MB		16	45 W		35 W		$250
	6360U	2 (4)	2.0 GHz	3.1 GHz	2.9 GHz	—	Iris 540	300 MHz	1000 MHz	4 MB	64 MB	12	15 W		9.5 W	Q3 2015	$304
	6350HQ	4 (4)	2.3 GHz	3.2 GHz	?		Iris Pro 580	350 MHz	900 MHz	6 MB	128 MB	16	45 W		35 W	Q1 2016	$306
	6300HQ				3.0 GHz	2.8 GHz	HD 530		950 MHz		—					September 1, 2015	$250
	6300U	2 (4)	2.4 GHz	3.0 GHz	2.9 GHz	—	HD 520	300 MHz	1000 MHz	3 MB		12	15 W		7.5 W		$281
	6287U		3.1 GHz	3.5 GHz	3.3 GHz		Iris 550		1100 MHz	4 MB	64 MB		28 W		23 W	Q3 2015	$304
	6267U		2.9 GHz	3.3 GHz	3.1 GHz				1050 MHz						23 W
	6260U		1.8 GHz	2.9 GHz	2.7 GHz		Iris 540		950 MHz				15 W		9.5 W		$304
	6200U		2.3 GHz	2.8 GHz			HD 520		1000 MHz	3 MB	—				7.5 W	September 1, 2015	$281
Core i3	6167U		2.7 GHz	—	—		Iris 550				64 MB		28 W		23 W	Q3 2015	$304
	6157U		2.4 GHz													Q3 2016
	6100H		2.7 GHz				HD 530	350 MHz	900 MHz		—		35 W		—	September 1, 2015	$225
	6100U		2.3 GHz				HD 520	300 MHz	1000 MHz				15 W		7.5 W		$281
	6006U		2.0 GHz						900 MHz						—	November, 2016	$281
Core m7	6Y75		1.2 GHz	3.1 GHz	2.9 GHz		HD 515	300 MHz	1000 MHz	4 MB		10	4.5 W	7 W	3.5 W	September 1, 2015	$393
Core m5	6Y57		1.1 GHz	2.8 GHz	2.4 GHz				900 MHz								$281
	6Y54			2.7 GHz
Core m3	6Y30		0.9 GHz	2.2 GHz	2.0 GHz				850 MHz						3.8 W
Pentium	4405U		2.1 GHz	—	—		HD 510		950 MHz	2 MB			15 W	—	10 W	Q3 2015	$161
	4405Y		1.5 GHz				HD 515		800 MHz				6 W		4.5 W
Celeron	G3902E	2 (2)	1.6 GHz	—			HD 510	350 MHz	950 MHz			16	25 W		—	Q1 2016	$107
	G3900E		2.4 GHz										35 W
	3955U		2.0 GHz					300 MHz	900 MHz			10	15 W		10 W	Q4 2015
	3855U		1.6 GHz

Workstation processors

• All models support: MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX, AVX2, AVX-512, FMA3, MPX, Enhanced Intel SpeedStep Technology (EIST), Intel 64, XD bit (an NX bit implementation), Intel VT-x, Intel VT-d, Turbo Boost (excluding W-2102 and W-2104), Hyper-threading (excluding W-2102 and W-2104), AES-NI, Intel TSX-NI, Smart Cache.
• PCI Express lanes: 48
• Supports up to 8 DIMMs of DDR4 memory, maximum 512 GB.

Model	sSpec number	Cores (threads)	Clock rate	Turbo Boost all-core/2.0 (/max. 3.0)	L2 cache	L3 cache	TDP	Socket	I/O bus	Memory	Release date	Part number(s)	Release price (USD)
Xeon W-2195	SR3RX (M0)	18 (36)	2.3 GHz	3.2/4.3 GHz	18 × 1 MB	24.75 MB	140 W	LGA 2066	DMI 3.0	4 × DDR4-2666	August 29, 2017	CD8067303805901	$2553
Xeon W-2191B	SR3RW (H0)	18 (36)	2.3 GHz	3.2/4.3 GHz	18 × 1 MB	24.75 MB	140 W	LGA 2066	DMI 3.0	4 × DDR4-2666	December 21, 2017		OEM for Apple^[100]^[101]
Xeon W-2175	SR3W2 (M0)	14 (28)	2.5 GHz	3.3/4.3 GHz	14 × 1 MB	19.25 MB	140 W	LGA 2066	DMI 3.0	4 × DDR4-2666	October 15, 2017	CD8067303842300	$1947
Xeon W-2170B	SR3W3 (H0)	14 (28)	2.5 GHz	3.3/4.3 GHz	14 × 1 MB	19.25 MB	140 W	LGA 2066	DMI 3.0	4 × DDR4-2666	December 21, 2017		OEM for Apple^[100]^[101]
Xeon W-2155	SR3LR (U0)	10 (20)	3.3 GHz	4.0/4.5 GHz	10 × 1 MB	13.75 MB	140 W	LGA 2066	DMI 3.0	4 × DDR4-2666	August 29, 2017	CD8067303533703	$1440
Xeon W-2150B	SR3LS (H0)	10 (20)	3 GHz	4.0/4.5 GHz	10 × 1 MB	13.75 MB	120 W	LGA 2066	DMI 3.0	4 × DDR4-2666	December 21, 2017		OEM for Apple^[100]^[101]
Xeon W-2145	SR3LQ (U0)	8 (16)	3.7 GHz	4.3/4.5 GHz	8 × 1 MB	11.00 MB	140 W	LGA 2066	DMI 3.0	4 × DDR4-2666	August 29, 2017	CD8067303533601	$1113
Xeon W-2140B	SR3LK (H0)	8 (16)	3.2 GHz	3.9/4.2 GHz	8 × 1 MB	11.00 MB	120 W	LGA 2066	DMI 3.0	4 × DDR4-2666	December 21, 2017		OEM for Apple^[100]^[101]
Xeon W-2135	SR3LN (U0)	6 (12)	3.7 GHz	4.4/4.5 GHz	6 × 1 MB	8.25 MB	140 W	LGA 2066	DMI 3.0	4 × DDR4-2666	August 29, 2017	CD8067303533403	$835
Xeon W-2133	SR3LL (U0)	6 (12)	3.6 GHz	3.8/3.9 GHz	6 × 1 MB	8.25 MB	140 W	LGA 2066	DMI 3.0	4 × DDR4-2666	August 29, 2017	CD8067303533204	$617
Xeon W-2125	SR3LM (U0)	4 (8)	4 GHz	4.4/4.5 GHz	4 × 1 MB	8.25 MB	120 W	LGA 2066	DMI 3.0	4 × DDR4-2666	August 29, 2017	CD8067303533303	$444
Xeon W-2123	SR3LJ (U0)	4 (8)	3.6 GHz	3.7/3.9 GHz	4 × 1 MB	8.25 MB	120 W	LGA 2066	DMI 3.0	4 × DDR4-2666	August 29, 2017	CD8067303533002	$294
Xeon W-2104	SR3LH (U0)	4 (4)	3.2 GHz	N/A	4 × 1 MB	8.25 MB	120 W	LGA 2066	DMI 3.0	4 × DDR4-2400	August 29, 2017	CD8067303532903	$255
Xeon W-2102	SR3LG (U0)	4 (4)	2.9 GHz	N/A	4 × 1 MB	8.25 MB	120 W	LGA 2066	DMI 3.0	4 × DDR4-2400	August 29, 2017	CD8067303532802	$202

Server processors

E3 series server chips all consist of System Bus 9 GT/s, max. memory bandwidth of 34.1 GB/s dual channel memory. Unlike its predecessor, the Skylake Xeon CPUs require C230 series (C232/C236) or C240 series (C242/C246) chipset to operate, with integrated graphics working only with C236 and C246 chipsets. Mobile counterparts uses CM230 and CM240 series chipsets.

Skylake E3-12xx and E3 15xx v5 SKUs

Target segment	Cores (threads)	Processor branding and model		GPU	Clock rate				Cache		TDP	Release date	Release price (USD) tray / box	Motherboard
					CPU		Graphics		L3	L4 (eDRAM)				Socket	Interface	Memory
					Normal	Turbo	Normal	Turbo
Server	4 (8)	Xeon E3 v5	1280v5	—	3.7 GHz	4.0 GHz	—		8 MB	—	80 W	Q4 2015	$612 / —	LGA 1151	DMI 3.0 PCIe 3.0	DDR4 2133/1866 or DDR3L 1333/1600 with ECC
			1275v5	HD P530	3.6 GHz		350 MHz	1.15 GHz					$339 / —
			1270v5	—	3.6 GHz		—						$328 / $339
			1260Lv5		2.9 GHz	3.9 GHz					45 W		$294 / —
			1245v5	HD P530	3.5 GHz		350 MHz	1.15 GHz			80 W		$284 / —
			1240v5	—	3.5 GHz		—						$272 / $282
			1240Lv5		2.1 GHz	3.2 GHz					25 W		$278 / —
			1230v5		3.4 GHz	3.8 GHz					80 W		$250 / $260
	4 (4)		1235Lv5	HD P530	2.0 GHz	3.0 GHz	350 MHz	1.15 GHz			25 W		$250 / —
			1225v5		3.3 GHz	3.7 GHz					80 W		$213 / —
			1220v5	—	3.0 GHz	3.5 GHz	—						$193 / —
Mobile workstation	4 (8)		1575Mv5	Iris Pro P580	3.0 GHz	3.9 GHz	350 MHz	1.1 GHz		128 MB	45 W	Q1 2016	$1207 / —	BGA 1440		DDR4-2133 LPDDR3-1866 DDR3L-1600 with ECC
			1545Mv5		2.9 GHz	3.8 GHz		1.05 GHz					$679 / —
			1535Mv5	HD P530						—		Q3 2015	$623 / —
			1505Mv5		2.8 GHz	3.7 GHz							$434 / —
Embedded			1505Lv5		2.0 GHz	2.8 GHz		1.0 GHz			25 W	Q4 2015	$433 / —

Skylake-SP (14 nm) Scalable Performance

• Xeon Platinum supports up to 8 sockets. Xeon Gold supports up to 4 sockets. Xeon Silver and Bronze support up to 2 sockets.
  • −M: 1536 GB RAM per socket instead of 768 GB RAM for non−M SKUs
  • −F: integrated OmniPath fabric
  • −T: High thermal-case and extended reliability
• Support for up to 12 DIMMs of DDR4 memory per CPU socket.
• Xeon Platinum, Gold 61XX, and Gold 5122 have two AVX-512 FMA units per core. Xeon Gold 51XX (except 5122), Silver, and Bronze have a single AVX-512 FMA unit per core.

Xeon Bronze and Silver (dual processor)

• Xeon Bronze 31XX has no HT or Turbo Boost support.
• Xeon Bronze 31XX supports DDR4-2133 MHz RAM. Xeon Silver 41XX supports DDR4-2400 MHz RAM.
• Xeon Bronze 31XX and Xeon Silver 41XX support two UPI links at 9.6 GT/s.

Model	sSpec number	Cores (threads)	Clock rate	Turbo Boost all-core/2.0 (/max. 3.0)	L2 cache	L3 cache	TDP	Socket	I/O bus	Memory	Release date	Part number(s)	Release price (USD)
Xeon Silver 4116	SR3HQ (M0)	12 (24)	2.1 GHz	2.4/3.0 GHz	12 × 1 MB	16.50 MB	85 W	LGA 3647	2 × 9.6 GT/s UPI	6 × DDR4-2400	11 July 2017	CD8067303567200 BX806734116	$1002 $1012
Xeon Silver 4116T	SR3MQ (M0)	12 (24)	2.1 GHz	2.4/3.0 GHz	12 × 1 MB	16.50 MB	85 W	LGA 3647	2 × 9.6 GT/s UPI	6 × DDR4-2400	Q3 2017	CD8067303645400	$1112
Xeon Silver 4114	SR3GK (U0)	10 (20)	2.2 GHz	2.5/3.0 GHz	10 × 1 MB	13.75 MB	85 W	LGA 3647	2 × 9.6 GT/s UPI	6 × DDR4-2400	11 July 2017	CD8067303561800 BX806734114	$694 $704
Xeon Silver 4114T	SR3MM (U0)	10 (20)	2.2 GHz	2.5/3.0 GHz	10 × 1 MB	13.75 MB	85 W	LGA 3647	2 × 9.6 GT/s UPI	6 × DDR4-2400	Q3 2017	CD8067303645300	$773
Xeon Silver 4112	SR3GN (U0)	4 (8)	2.6 GHz	2.9/3.0 GHz	4 × 1 MB	8.25 MB	85 W	LGA 3647	2 × 9.6 GT/s UPI	6 × DDR4-2400	11 July 2017	CD8067303562100 BX806734112	$473 $483
Xeon Silver 4110	SR3GH (U0)	8 (16)	2.1 GHz	2.4/3.0 GHz	8 × 1 MB	11.00 MB	85 W	LGA 3647	2 × 9.6 GT/s UPI	6 × DDR4-2400	11 July 2017	CD8067303561400 BX806734110	$501 $511
Xeon Silver 4109T	SR3GP (U0)	8 (16)	2 GHz	2.3/3.0 GHz	8 × 1 MB	11.00 MB	70 W	LGA 3647	2 × 9.6 GT/s UPI	6 × DDR4-2400	11 July 2017	CD8067303562200	$501
Xeon Silver 4108	SR3GJ (U0)	8 (16)	1.8 GHz	2.1/3.0 GHz	8 × 1 MB	11.00 MB	85 W	LGA 3647	2 × 9.6 GT/s UPI	6 × DDR4-2400	11 July 2017	CD8067303561500 BX806734108	$417 $427
Xeon Bronze 3106	SR3GL (U0)	8 (8)	1.7 GHz	N/A	8 × 1 MB	11.00 MB	85 W	LGA 3647	2 × 9.6 GT/s UPI	6 × DDR4-2133	11 July 2017	CD8067303561900 BX806733106	$306 $316
Xeon Bronze 3104	SR3GM (U0)	6 (6)	1.7 GHz	N/A	6 × 1 MB	8.25 MB	85 W	LGA 3647	2 × 9.6 GT/s UPI	6 × DDR4-2133	11 July 2017	CD8067303562000 BX806733104	$223 $213

Xeon Gold (quad processor)

• Xeon Gold 51XX and F SKUs has two UPIs at 10.4 GT/s. Xeon Gold 61XX has three UPIs at 10.4 GT/s.
• Xeon Gold 51XX support DDR4-2400 MHz RAM (except 5122). Xeon Gold 5122 and 61XX support DDR4-2666 MHz RAM.

Model	sSpec number	Cores (threads)	Clock rate	Turbo Boost all-core/2.0 (/max. 3.0)	L2 cache	L3 cache	TDP	Socket	I/O bus	Memory	Release date	Part number(s)	Release price (USD)
Xeon Gold 6161	SR3G7 (H0)	22 (44)	2.2 GHz	2.7/3.0GHz	22 × 1 MB	30.25 MB	165 W	LGA 3647	3 × 10.4 GT/s UPI	6 × DDR4-2666	2017	CD8067303532100
Xeon Gold 6154	SR3J5 (H0)	18 (36)	3 GHz	3.7/3.7GHz	18 × 1 MB	24.75 MB	200 W	LGA 3647	3 × 10.4 GT/s UPI	6 × DDR4-2666	11 July 2017	CD8067303592700	$3543
Xeon Gold 6152	SR3B4 (H0)	22 (44)	2.1 GHz	2.8/3.7GHz	22 × 1 MB	30.25 MB	140 W	LGA 3647	3 × 10.4 GT/s UPI	6 × DDR4-2666	11 July 2017	CD8067303406000 BX806736152	$3655 $3661
Xeon Gold 6150	SR37K (H0)	18 (36)	2.7 GHz	3.4/3.7GHz	18 × 1 MB	24.75 MB	165 W	LGA 3647	3 × 10.4 GT/s UPI	6 × DDR4-2666	11 July 2017	CD8067303328000	$3358
Xeon Gold 6149		16 (32)	3.1 GHz		16 × 1 MB	MB		LGA 3647	3 × 10.4 GT/s UPI	6 × DDR4-2666			OEM
Xeon Gold 6148	SR3B6 (H0)	20 (40)	2.4 GHz	3.1/3.7GHz	20 × 1 MB	27.50 MB	150 W	LGA 3647	3 × 10.4 GT/s UPI	6 × DDR4-2666	11 July 2017	CD8067303406200 BX806736148	$3072 $3078
Xeon Gold 6148F	SR3KJ (H0)	20 (40)	2.4 GHz	3.1/3.7GHz	20 × 1 MB	27.50 MB	150 W	LGA 3647	2 × 10.4 GT/s UPI	6 × DDR4-2666	11 July 2017	CD8067303593800	$3227
Xeon Gold 6146	SR3MA (H0)	12 (24)	3.2 GHz	3.9/4.2GHz	12 × 1 MB	24.75 MB	165 W	LGA 3647	3 × 10.4 GT/s UPI	6 × DDR4-2666	11 July 2017	CD8067303657201	$3286
Xeon Gold 6145	SR3G4 (H0)	20 (40)	2 GHz	2.7/3.7GHz	20 × 1 MB	27.50 MB	145 W	LGA 3647	3 × 10.4 GT/s UPI	6 × DDR4-2666	2017	CD8067303528200
Xeon Gold 6144	SR3MB (H0)	8 (16)	3.5 GHz	4.1/4.2GHz	8 × 1 MB	24.75 MB	150 W	LGA 3647	3 × 10.4 GT/s UPI	6 × DDR4-2666	Q3 2017	CD8067303657302	$2925
Xeon Gold 6142M	SR3B1 (H0)	16 (32)	2.6 GHz	3.3/3.7GHz	16 × 1 MB	22.00 MB	150 W	LGA 3647	3 × 10.4 GT/s UPI	6 × DDR4-2666	11 July 2017	CD8067303405700	$5949
Xeon Gold 6142F	SR3KH (H0)	16 (32)	2.6 GHz	3.3/3.7GHz	16 × 1 MB	22.00 MB	160 W	LGA 3647	2 × 10.4 GT/s UPI	6 × DDR4-2666	11 July 2017	CD8067303593700	$3101
Xeon Gold 6142	SR3AY (H0)	16 (32)	2.6 GHz	3.3/3.7GHz	16 × 1 MB	22.00 MB	150 W	LGA 3647	3 × 10.4 GT/s UPI	6 × DDR4-2666	11 July 2017	CD8067303405400 BX806736142	$2946 $2952
Xeon Gold 6140	SR3AX (H0)	18 (36)	2.3 GHz	3.0/3.7GHz	18 × 1 MB	24.75 MB	140 W	LGA 3647	3 × 10.4 GT/s UPI	6 × DDR4-2666	11 July 2017	CD8067303405200 BX806736140	$2445 $2451
Xeon Gold 6140M	SR3AZ (H0)	18 (36)	2.3 GHz	3.0/3.7GHz	18 × 1 MB	24.75 MB	140 W	LGA 3647	3 × 10.4 GT/s UPI	6 × DDR4-2666	11 July 2017	CD8067303405500	$5448
Xeon Gold 6138	SR3B5 (H0)	20 (40)	2 GHz	2.7/3.7GHz	20 × 1 MB	27.50 MB	125 W	LGA 3647	3 × 10.4 GT/s UPI	6 × DDR4-2666	11 July 2017	CD8067303406100 BX806736138	$2612 $2618
Xeon Gold 6138F	SR3KK (H0)	20 (40)	2 GHz	2.7/3.7GHz	20 × 1 MB	27.50 MB	135 W	LGA 3647	2 × 10.4 GT/s UPI	6 × DDR4-2666	11 July 2017	CD8067303593900	$2767
Xeon Gold 6138T	SR3J7 (H0)	20 (40)	2 GHz	2.7/3.7GHz	20 × 1 MB	27.50 MB	125 W	LGA 3647	3 × 10.4 GT/s UPI	6 × DDR4-2666	11 July 2017	CD8067303592900	$2742
Xeon Gold 6136	SR3B2 (H0)	12 (24)	3 GHz	3.6/3.7GHz	12 × 1 MB	24.75 MB	150 W	LGA 3647	3 × 10.4 GT/s UPI	6 × DDR4-2666	11 July 2017	CD8067303405800	$2460
Xeon Gold 6134	SR3AR (H0)	8 (16)	3.2 GHz	3.7/3.7GHz	8 × 1 MB	24.75 MB	130 W	LGA 3647	3 × 10.4 GT/s UPI	6 × DDR4-2666	11 July 2017	CD8067303330302 BX806736134	$2214 $2220
Xeon Gold 6134M	SR3AS (H0)	8 (16)	3.2 GHz	3.7/3.7GHz	8 × 1 MB	24.75 MB	130 W	LGA 3647	3 × 10.4 GT/s UPI	6 × DDR4-2666	11 July 2017	CD8067303330402	$5217
Xeon Gold 6132	SR3J3 (H0)	14 (28)	2.6 GHz	3.3/3.7GHz	14 × 1 MB	19.25 MB	140 W	LGA 3647	3 × 10.4 GT/s UPI	6 × DDR4-2666	11 July 2017	CD8067303592500	$2111
Xeon Gold 6130	SR3B9 (H0)	16 (32)	2.1 GHz	2.8/3.7GHz	16 × 1 MB	22.00 MB	125 W	LGA 3647	3 × 10.4 GT/s UPI	6 × DDR4-2666	11 July 2017	CD8067303409000 BX806736130	$1900
Xeon Gold 6130F	SR3KD (H0)	16 (32)	2.1 GHz	2.8/3.7GHz	16 × 1 MB	22.00 MB	125 W	LGA 3647	2 × 10.4 GT/s UPI	6 × DDR4-2666	11 July 2017	CD8067303593300	$2049
Xeon Gold 6130T	SR3J8 (H0)	16 (32)	2.1 GHz	2.8/3.7GHz	16 × 1 MB	22.00 MB	125 W	LGA 3647	3 × 10.4 GT/s UPI	6 × DDR4-2666	11 July 2017	CD8067303593000	$1988
Xeon Gold 6128	SR3J4 (H0)	6 (12)	3.4 GHz	3.7/3.7GHz	6 × 1 MB	19.25 MB	115 W	LGA 3647	3 × 10.4 GT/s UPI	6 × DDR4-2666	11 July 2017	CD8067303592600 BX806736128	$1691 $1697
Xeon Gold 6126	SR3B3 (H0)	12 (24)	2.6 GHz	3.3/3.7GHz	12 × 1 MB	19.25 MB	125 W	LGA 3647	3 × 10.4 GT/s UPI	6 × DDR4-2666	11 July 2017	CD8067303405900	$1776
Xeon Gold 6126F	SR3KE (H0)	12 (24)	2.6 GHz	3.3/3.7GHz	12 × 1 MB	19.25 MB	135 W	LGA 3647	2 × 10.4 GT/s UPI	6 × DDR4-2666	11 July 2017	CD8067303593400	$1931
Xeon Gold 6126T	SR3J9 (H0)	12 (24)	2.6 GHz	3.3/3.7GHz	12 × 1 MB	19.25 MB	125 W	LGA 3647	3 × 10.4 GT/s UPI	6 × DDR4-2666	11 July 2017	CD8067303593100	$1865
Xeon Gold 5122	SR3AT (H0)	4 (8)	3.6 GHz	3.7/3.7GHz	4 × 1 MB	16.50 MB	105 W	LGA 3647	2 × 10.4 GT/s UPI	6 × DDR4-2666	11 July 2017	CD8067303330702 BX806735122	$1221 $1227
Xeon Gold 5120	SR3GD (M0)	14 (28)	2.2 GHz	2.6/3.2GHz	14 × 1 MB	19.25 MB	105 W	LGA 3647	2 × 10.4 GT/s UPI	6 × DDR4-2400	11 July 2017	CD8067303535900 BX806735120	$1555 $1561
Xeon Gold 5120T	SR3GC (M0)	14 (28)	2.2 GHz	2.6/3.2GHz	14 × 1 MB	19.25 MB	105 W	LGA 3647	2 × 10.4 GT/s UPI	6 × DDR4-2400	11 July 2017	CD8067303535700	$1727
Xeon Gold 5119T	SR3MN (M0)	14 (28)	1.9 GHz	2.3/3.2GHz	14 × 1 MB	19.25 MB	85 W	LGA 3647	2 × 10.4 GT/s UPI	6 × DDR4-2400	11 July 2017	CD8067303567703	$1555
Xeon Gold 5118	SR3GF (M0)	12 (24)	2.3 GHz	2.7/3.2GHz	12 × 1 MB	16.50 MB	105 W	LGA 3647	2 × 10.4 GT/s UPI	6 × DDR4-2400	11 July 2017	CD8067303536100	$1273
Xeon Gold 5117	SR37S (M0)	14 (28)	2 GHz	2.3/2.8GHz	14 × 1 MB	19.25 MB	105 W	LGA 3647	2 × 10.4 GT/s UPI	6 × DDR4-2400	11 July 2017	CD8067303317801	$1286
Xeon Gold 5117F	SR3KM (M0)	14 (28)	2 GHz	2.3/2.8GHz	14 × 1 MB	19.25 MB	113 W	LGA 3647	2 × 10.4 GT/s UPI	6 × DDR4-2400	11 July 2017	CD8067303680501
Xeon Gold 5115	SR3GB (M0)	10 (20)	2.4 GHz	2.8/3.2GHz	10 × 1 MB	13.75 MB	85 W	LGA 3647	2 × 10.4 GT/s UPI	6 × DDR4-2400	11 July 2017	CD8067303535601	$1221

•  
  Intel Skylake Xeon gold processor
•  
  Intel Skylake Xeon gold processor, delidded
•  
  Die shot

Xeon Platinum (octal processor)

• Xeon Platinum non-F SKUs have three UPIs at 10.4 GT/s. Xeon Platinum F-SKUs have two UPIs at 10.4 GT/s.
• Xeon Platinum supports DDR4-2666 MHz RAM.

Model	sSpec number	Cores (threads)	Clock rate	Turbo Boost all-core/2.0 (/max. 3.0)	L2 cache	L3 cache	TDP	Socket	I/O bus	Memory	Release date	Part number(s)	Release price (USD)
Xeon Platinum 8180	SR377 (H0)	28 (56)	2.5 GHz	3.2/3.8 GHz	28 × 1 MB	38.50 MB	205 W	LGA 3647	3 × 10.4 GT/s UPI	6 × DDR4-2666	11 July 2017	CD8067303314400	$10,009
Xeon Platinum 8180M	SR37T (H0)	28 (56)	2.5 GHz	3.2/3.8 GHz	28 × 1 MB	38.50 MB	205 W	LGA 3647	3 × 10.4 GT/s UPI	6 × DDR4-2666	11 July 2017	CD8067303192101	$13,011
Xeon Platinum 8176	SR37A (H0)	28 (56)	2.1 GHz	2.8/3.8 GHz	28 × 1 MB	38.50 MB	165 W	LGA 3647	3 × 10.4 GT/s UPI	6 × DDR4-2666	11 July 2017	CD8067303314700	$8790
Xeon Platinum 8176F	SR3MK (H0)	28 (56)	2.1 GHz	2.8/3.8 GHz	28 × 1 MB	38.50 MB	173 W	LGA 3647	2 × 10.4 GT/s UPI	6 × DDR4-2666	Q3, 2017	CD8067303694600	$8874
Xeon Platinum 8176M	SR37U (H0)	28 (56)	2.1 GHz	2.8/3.8 GHz	28 × 1 MB	38.50 MB	165 W	LGA 3647	3 × 10.4 GT/s UPI	6 × DDR4-2666	11 July 2017	CD8067303133605	$11,722
Xeon Platinum 8173M	SR37Q (H0)	28 (56)	2 GHz	2.7/3.5 GHz	28 × 1 MB	38.50 MB	165 W	LGA 3647	3 × 10.4 GT/s UPI	6 × DDR4-2666	2017	CD8067303172400
Xeon Platinum 8170	SR37H (H0)	26 (52)	2.1 GHz	2.8/3.7 GHz	26 × 1 MB	35.75 MB	165 W	LGA 3647	3 × 10.4 GT/s UPI	6 × DDR4-2666	11 July 2017	CD8067303327601 BX806738170	$7405 $7411
Xeon Platinum 8170M	SR3BD (H0)	26 (52)	2.1 GHz	2.8/3.7 GHz	26 × 1 MB	35.75 MB	165 W	LGA 3647	3 × 10.4 GT/s UPI	6 × DDR4-2666	11 July 2017	CD8067303319201	$10,409
Xeon Platinum 8168	SR37J (H0)	24 (48)	2.7 GHz	3.4/3.7 GHz	24 × 1 MB	33.00 MB	205 W	LGA 3647	3 × 10.4 GT/s UPI	6 × DDR4-2666	11 July 2017	CD8067303327701	$5890
Xeon Platinum 8167M	SR3A0 (H0)	26 (52)	2 GHz	2.4/2.4 GHz	26 × 1 MB	35.75 MB	165 W	LGA 3647	3 × 10.4 GT/s UPI	6 × DDR4-2666	2017	CD8067303180701
Xeon Platinum 8164	SR3BB (H0)	26 (52)	2 GHz	2.7/3.7 GHz	26 × 1 MB	35.75 MB	150 W	LGA 3647	3 × 10.4 GT/s UPI	6 × DDR4-2666	11 July 2017	CD8067303408800 BX806738164	$6114 $6120
Xeon Platinum 8163	SR3G1 (H0)	24 (48)	2.4 GHz	2.7/3.1 GHz	24 × 1 MB	33.00 MB	165 W	LGA 3647	3 × 10.4 GT/s UPI	6 × DDR4-2666	2017	CD8067303527200
Xeon Platinum 8160	SR3B0 (H0)	24 (48)	2.1 GHz	2.8/3.7 GHz	24 × 1 MB	33.00 MB	150 W	LGA 3647	3 × 10.4 GT/s UPI	6 × DDR4-2666	11 July 2017	CD8067303405600 BX806738160	$4702 $4708
Xeon Platinum 8160F	SR3B8 (H0)	24 (48)	2.1 GHz	2.8/3.7 GHz	24 × 1 MB	33.00 MB	160 W	LGA 3647	2 × 10.4 GT/s UPI	6 × DDR4-2666	11 July 2017	CD8067303406600	$4856
Xeon Platinum 8160M	SR3B8 (H0)	24 (48)	2.1 GHz	2.8/3.7 GHz	24 × 1 MB	33.00 MB	150 W	LGA 3647	3 × 10.4 GT/s UPI	6 × DDR4-2666	11 July 2017	CD8067303406600	$7704
Xeon Platinum 8160T	SR3J6 (H0)	24 (48)	2.1 GHz	2.8/3.7 GHz	24 × 1 MB	33.00 MB	150 W	LGA 3647	3 × 10.4 GT/s UPI	6 × DDR4-2666	11 July 2017	CD8067303592800	$4936
Xeon Platinum 8158	SR3B7 (H0)	12 (24)	3 GHz	2.7/3.7 GHz	12 × 1 MB	24.75 MB	150 W	LGA 3647	3 × 10.4 GT/s UPI	6 × DDR4-2666	11 July 2017	CD8067303406500	$7007
Xeon Platinum 8156	SR3AV (H0)	4 (8)	3.6 GHz	3.3/3.7 GHz	4 × 1 MB	16.50 MB	105 W	LGA 3647	3 × 10.4 GT/s UPI	6 × DDR4-2666	11 July 2017	CD8067303368800	$7007
Xeon Platinum 8153	SR3BA (H0)	16 (32)	2 GHz	2.3/2.8 GHz	16 × 1 MB	22.00 MB	125 W	LGA 3647	3 × 10.4 GT/s QPI	6 × DDR4-2666	11 July 2017	CD8067303408900	$3115

See also

• List of Intel CPU microarchitectures

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External links

• Ung, Gordon (August 18, 2015). "Intel Skylake CPU details revealed: These faster, more power-efficient chips can even drive three 4K monitors". PC world.
• Shields, Anne (September 19, 2015). "Intel's Skylake a New Lifeline for the PC Market?". Yahoo Finance.
• "Graphics Driver Support Update for 10th Generation and Older Intel Processor Graphics". Intel Support. December 30, 2022.