Universal memory refers to a computer data storage device combining the cost benefits of DRAM, the speed of SRAM, the non-volatility of flash memory along with infinite durability, and longevity. Such a device, if it ever becomes possible to develop, would have a far-reaching impact on the computer market. Some[1] doubt that such a type of memory will ever be possible.
Computers, for most of their recent history, have depended on several different data storage technologies simultaneously as part of their operation. Each one operates at a level in the memory hierarchy where another would be unsuitable. A personal computer might include a few megabytes of fast but volatile and expensive SRAM as the CPU cache, several gigabytes of slower DRAM for program memory, and 128 GB-8 TB of the slow but non-volatileflash memory or 1-10 terabytes of "spinning platters" hard disk drive for long-term storage. For example, a university recommended[2] students entering in 2015–2016 to have a PC with:
- a CPU with a 4×256 KB L2 cache, and a 6 MB L3 cache
Researchers seek to replace these different memory types with one single type to reduce the cost and increase performance. For a memory technology to be considered a universal memory, it would need to have best characteristics of several memory technologies. It would need to:
- operate very quickly – like SRAM cache
- support a practically unlimited number of read/write cycles – like SRAM and DRAM
- retain data indefinitely without using power – like flash memory and hard disk drives, and
- be sufficiently large for common operating systems and application programs, yet affordable – like hard disk drives.
The last criterion is likely to be satisfied last, as economies of scale in manufacturing reduce cost. Many types of memory technologies have been explored with the goal of creating a practical universal memory. These include:
^Fink, Martin. "HP Discover 2014 Barcelona Keynote see 12:11". Youtube. Hewlett Packard. Retrieved 4 December 2014.
February 21, 2023
universal, memory, this, article, needs, additional, citations, verification, please, help, improve, this, article, adding, citations, reliable, sources, unsourced, material, challenged, removed, find, sources, news, newspapers, books, scholar, jstor, january,. This article needs additional citations for verification Please help improve this article by adding citations to reliable sources Unsourced material may be challenged and removed Find sources Universal memory news newspapers books scholar JSTOR January 2017 Learn how and when to remove this template message Universal memory refers to a computer data storage device combining the cost benefits of DRAM the speed of SRAM the non volatility of flash memory along with infinite durability and longevity Such a device if it ever becomes possible to develop would have a far reaching impact on the computer market Some 1 doubt that such a type of memory will ever be possible Computers for most of their recent history have depended on several different data storage technologies simultaneously as part of their operation Each one operates at a level in the memory hierarchy where another would be unsuitable A personal computer might include a few megabytes of fast but volatile and expensive SRAM as the CPU cache several gigabytes of slower DRAM for program memory and 128 GB 8 TB of the slow but non volatile flash memory or 1 10 terabytes of spinning platters hard disk drive for long term storage For example a university recommended 2 students entering in 2015 2016 to have a PC with a CPU with a 4 256 KB L2 cache and a 6 MB L3 cache 16 GB DRAM 256 GB solid state drive and 1 TB hard disk drive dd Researchers seek to replace these different memory types with one single type to reduce the cost and increase performance For a memory technology to be considered a universal memory it would need to have best characteristics of several memory technologies It would need to operate very quickly like SRAM cache support a practically unlimited number of read write cycles like SRAM and DRAM retain data indefinitely without using power like flash memory and hard disk drives and be sufficiently large for common operating systems and application programs yet affordable like hard disk drives dd The last criterion is likely to be satisfied last as economies of scale in manufacturing reduce cost Many types of memory technologies have been explored with the goal of creating a practical universal memory These include low voltage non volatile compound semiconductor memory demonstrated 3 4 magnetoresistive random access memory MRAM in development and production bubble memory 1970 1980 obsolete racetrack memory currently experimental ferroelectric random access memory FRAM in development and production phase change memory PCM programmable metallization cell PMC resistive random access memory RRAM nano RAM memristor based memory 5 Since each memory has its limitations none of these have yet reached the goals of universal memory References Edit Mellor Chris December 20 2019 WD Storage class memory will not replace DRAM or NAND Blocks and Files UCSD IT Service Portal Information Technology ucsdservicedesk service now com Discovery of a Holy Grail with the invention of universal computer memory www lancaster ac uk Tizno Ofogh Marshall Andrew R J Fernandez Delgado Natalia Herrera Miriam Molina Sergio I Hayne Manus June 20 2019 Room temperature Operation of Low voltage Non volatile Compound semiconductor Memory Cells Scientific Reports 9 1 8950 Bibcode 2019NatSR 9 8950T doi 10 1038 s41598 019 45370 1 PMC 6586817 PMID 31222059 Fink Martin HP Discover 2014 Barcelona Keynote see 12 11 Youtube Hewlett Packard Retrieved 4 December 2014 Retrieved from https en wikipedia org w index php title Universal memory amp oldid 1113283295, wikipedia, wiki, book, books, library,
