| DRAM types |
Virtual Channel Random Access Memory (VC-RAM in short, other names such as VC-SDRAM, VCSDRAM, VCDRAM, or VCM) was a proprietary type of SDRAM produced by NEC, but released as an open standard with no licensing fees. SDRAM refers to synchronous Dynamic random access memory, a term that is used to describe dynamic random access memory that has a synchronous interface SDRAM refers to synchronous Dynamic random access memory, a term that is used to describe dynamic random access memory that has a synchronous interface DDR SDRAM ( double data rate synchronous dynamic random access memory) is a class of memory Integrated circuit used in Computers It achieves nearly twice In Electronic engineering, DDR3 SDRAM or double-data-rate three Synchronous dynamic random access memory is a Random access memory Direct Rambus DRAM or DRDRAM (sometimes just called Rambus DRAM or RDRAM) is a type of synchronous dynamic RAM, designed by the Rambus XDR DRAM or extreme data rate Dynamic random access memory is a high-performance RAM interface and successor to the Rambus RDRAM it XDR2 DRAM is a type of Dynamic Random Access Memory that is offered by Rambus. GDDR3, Graphics Double Data Rate 3, is a graphics card-specific memory technology designed by ATI Technologies with the collaboration of JEDEC GDDR4 SDRAM (Graphics Double Data Rate version 4 is a type of Graphics card memory specified by the JEDEC Semiconductor Memory Standard GDDR5 (Graphics Double Data Rate version 5 is a type of Graphics card memory the standards of which were set out in the GDDR5 specification by JEDEC SDRAM refers to synchronous Dynamic random access memory, a term that is used to describe dynamic random access memory that has a synchronous interface is a Japanese multinational IT company headquartered in Minato Tokyo, Japan. VCM creates a state in which the various system processes can be assigned their own virtual channel, thus increasing the overall system efficiency by avoiding the need to have processes share buffer space. This is accomplished by creating different "blocks" of memory, allowing each individual memory block to interface separately with the memory controller and have its own buffer space. The only motherboards ever able to support VC-RAM were for AMD Athlon and Intel Pentium 3 processors. Athlon is the brand name applied to a series of different X86 processors designed and manufactured by AMD. Pentium III variants Katmai The first Pentium III variant was the Katmai (Intel product code 80525 A VC-RAM module is physically similar to a SDR SDRAM memory module, so VC-RAM capable motherboards are also able to use standard SDR SDRAM, but they cannot be mixed together. SDRAM refers to synchronous Dynamic random access memory, a term that is used to describe dynamic random access memory that has a synchronous interface
VC-RAM is faster than SDRAM because it has significantly lower latencies. The technology was a potential competitor of Rambus or RDRAM because VC-RAM was not nearly as expensive as RDRAM was; however, the technology did not catch on. Rambus Incorporated ( founded in 1990, is a provider of high-speed interface technology most notably their Rambus Dynamic RAM memory technology, which Direct Rambus DRAM or DRDRAM (sometimes just called Rambus DRAM or RDRAM) is a type of synchronous dynamic RAM, designed by the Rambus Instead, NEC accepted dual data rate (DDR) SDRAM as the successor of SDR SDRAM. [1]
NEC claims 3% boost in Quake benchmarks with 20% increase in system performance.
References
- ^ "AMD Introduces Evolutionary New Computing Platform, Increasing Memory Data Rate by up to 100 Percent. " AMD News Room 2000. October 31, 2000. Advanced Micro Devices. March 19, 2008 <http://www.amd.com/us-en/Corporate/VirtualPressRoom/0,,51_104_543_552~699,00.html>.
External links
- Crucial website
- NEC Launches 128Mb Virtual Channel Synchronous DRAM
- NEC Dramatically Improves Computer Performance with New Memory Technology
Dapyx Software network: MP3 Explorer | Ebook Manager | Zenithic