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  2. RDRAM - Wikipedia

    en.wikipedia.org/wiki/RDRAM

    Rambus's RDRAM saw use in two video game consoles, beginning in 1996 with the Nintendo 64. The Nintendo console used 4 MB RDRAM running with a 500 MHz clock on a 9-bit bus, providing 500 MB/s bandwidth. RDRAM allowed N64 to be equipped with a large amount of memory bandwidth while maintaining a lower cost due to design simplicity.

  3. DDR4 SDRAM - Wikipedia

    en.wikipedia.org/wiki/DDR4_SDRAM

    Clock cycles between sending a column address to the memory and the beginning of the data in response tRCD Clock cycles between row activate and reads/writes tRP Clock cycles between row precharge and activate. DDR4-xxxx denotes per-bit data transfer rate, and is normally used to describe DDR chips.

  4. Dynamic random-access memory - Wikipedia

    en.wikipedia.org/wiki/Dynamic_random-access_memory

    Synchronous dynamic RAM (SDRAM) significantly revises the asynchronous memory interface, adding a clock (and a clock enable) line. All other signals are received on the rising edge of the clock. The RAS and CAS inputs no longer act as strobes, but are instead, along with WE , part of a 3-bit command:

  5. Synchronous dynamic random-access memory - Wikipedia

    en.wikipedia.org/wiki/Synchronous_dynamic_random...

    Normal operations resume on the rising edge of the clock after the one where CKE is sampled high. Put another way, all other chip operations are timed relative to the rising edge of a masked clock. The masked clock is the logical AND of the input clock and the state of the CKE signal during the previous rising edge of the input clock. CS chip ...

  6. DDR SDRAM - Wikipedia

    en.wikipedia.org/wiki/DDR_SDRAM

    A single read or write operation for the DDR4 SDRAM consists of a single 8n-bit-wide 4-clock data transfer at the internal DRAM core and 8 corresponding n-bit-wide half-clock-cycle data transfers at the I/O pins. [20] RDRAM was a particularly expensive alternative to DDR SDRAM, and most manufacturers dropped its support from their chipsets ...

  7. Memory timings - Wikipedia

    en.wikipedia.org/wiki/Memory_timings

    Without knowing the clock frequency it is impossible to state if one set of timings is "faster" than another. For example, DDR3-2000 memory has a 1000 MHz clock frequency, which yields a 1 ns clock cycle. With this 1 ns clock, a CAS latency of 7 gives an absolute CAS latency of 7 ns. Faster DDR3-2666 memory (with a 1333 MHz clock, or 0.75 ns ...

  8. Rambus - Wikipedia

    en.wikipedia.org/wiki/Rambus

    On August 17, 2015, Rambus announced the new R+ DDR4 server memory chips RB26 DDR4 RDIMM and RB26 DDR4 LRDIMM. The chipset includes a DDR4 Register Clock Driver and Data Buffer, and it's fully-compliant with the JEDEC DDR4. [10] In 2016, Rambus acquired Semtech's Snowbush IP for US$32.5 million. Snowbush IP provides analog and mixed-signal IP ...

  9. PlayStation 2 technical specifications - Wikipedia

    en.wikipedia.org/wiki/PlayStation_2_technical...

    Memory management unit (MMU), [12] RDRAM controller and DMA controller: handle memory access within the system; Cache memory: 16 KB instruction cache, 8 KB + 16 KB scratchpad (ScrP) data cache; Scratchpad (SPR) is extended area of memory visible to the EE CPU. This extended memory provides 16 kilobytes of fast RAM available to be used by the ...