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A module of any particular size can therefore be assembled either from 32 small chips (36 for ECC memory), or 16(18) or 8(9) bigger ones. DDR memory bus width per channel is 64 bits (72 for ECC memory). Total module bit width is a product of bits per chip and number of chips. It also equals number of ranks (rows) multiplied by DDR memory bus width.
DDR SDRAM operating with a 100 MHz clock is called DDR-200 (after its 200 MT/s data transfer rate), and a 64-bit (8-byte) wide DIMM operated at that data rate is called PC-1600, after its 1600 MB/s peak (theoretical) bandwidth. Likewise, 12.8 GB/s transfer rate DDR3-1600 is called PC3-12800. Some examples of popular designations of DDR modules:
The die of a Samsung DDR-SDRAM 64-MBit package. Double data rate SDRAM (DDR SDRAM or DDR) was a later development of SDRAM, used in PC memory beginning in 2000. Subsequent versions are numbered sequentially (DDR2, DDR3, etc.). DDR SDRAM internally performs double-width accesses at the clock rate, and uses a double data rate interface to ...
Version 5.0 of MemTest86 added a mouse-driven graphical user interface (GUI) and UEFI support; the latter was added by Memtest86+ from version 6.0. [citation needed] These programs work with nearly all PC-compatible computers from 80386-and 80486-based systems to the latest systems with 64-bit processors. Each new release adds support for newer ...
PCMark Vantage is the first objective hardware performance benchmark for PCs running 32- and 64-bit versions of Microsoft Windows Vista. PCMark Vantage is suited for benchmarking Microsoft Windows Vista PCs from multimedia home entertainment systems and laptops to dedicated workstations and high-end gaming rigs.
Other memory technologies – namely HBM in version 3 and 4 [58] – aiming to replace DDR4 have also been proposed. In 2011, JEDEC introduced the Wide I/O 2 standard, which features stacked memory dies placed directly on top of the CPU within the same package. This configuration provides higher bandwidth and improved power efficiency compared ...
Learn how to download and install or uninstall the Desktop Gold software and if your computer meets the system requirements.
To transfer a 64-byte cache line requires eight consecutive accesses to a 64-bit DIMM, which can all be triggered by a single read or write command by configuring the SDRAM chips, using the mode register, to perform eight-word bursts. A cache line fetch is typically triggered by a read from a particular address, and SDRAM allows the "critical ...