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• Memory_timings abstract "Memory timings or RAM timings measure the performance of DRAM memory using four parameters: CL, TRCD, TRP, and TRAS in units of clock cycles; they are commonly written as four numbers separated with dashes, e.g. 7-8-8-24. The fourth (tRAS) is often omitted, and a fifth, the Command rate, sometimes added (normally 2T or 1T - also 2N, 1N). These parameters specify the latencies (time delays) that affect speed of random access memory. Lower numbers usually imply faster performance. What determines absolute system performance is actual latency time, usually measured in nanoseconds.When translating memory timings into actual latency, it is important to note that they are in units of clock cycles, which for double data rate memory is half the speed of the commonly-quoted transfer rate.For example, DDR3-2000 memory has a 1000 MHz clock frequency. With this 1 ns clock, CL=7 gives an absolute latency of 7 ns. Faster DDR3-2666 (with a 1333 MHz clock, or 0.75 ns per cycle), even with a longer CL=9, gives a shorter absolute latency of 6.75 ns.Modern DIMMs include a Serial Presence Detect (SPD) ROM chip that contains recommended memory timings for automatic configuration. The BIOS on a PC may allow the user to make adjustments in an effort to increase performance (with possible risk of decreased stability) or, in some cases, to increase stability (by using suggested timings).Note: Memory bandwidth measures the throughput of memory, and is closely related to memory timings. It is possible for advances in bandwidth technology to have an undesirable impact on latency. For example, DDR memory has been superseded by DDR2, and yet DDR2 has significantly higher latency at the same clock frequencies. However, DDR2 can be clocked faster, decreasing its cycle time. Now DDR2 has been superseded by DDR3, and the trend of a higher latency coupled with a higher clock speed has continued.Increasing memory bandwidth, even while increasing memory latency, can improve the performance of a computer system with multiple processors, and also systems with processors that have multiple execution threads. Higher bandwidth will also boost performance of integrated graphics that have no dedicated video memory.".
• Memory_timings wikiPageID "17897957".
• Memory_timings wikiPageLength "4607".
• Memory_timings wikiPageOutDegree "15".
• Memory_timings wikiPageRevisionID "655399916".
• Memory_timings wikiPageWikiLink BIOS.
• Memory_timings wikiPageWikiLink CAS_latency.
• Memory_timings wikiPageWikiLink Category:Computer_memory.
• Memory_timings wikiPageWikiLink DDR2_SDRAM.
• Memory_timings wikiPageWikiLink DDR3_SDRAM.
• Memory_timings wikiPageWikiLink DDR_SDRAM.
• Memory_timings wikiPageWikiLink DIMM.
• Memory_timings wikiPageWikiLink DRAM.
• Memory_timings wikiPageWikiLink Double_data_rate.
• Memory_timings wikiPageWikiLink Dynamic_random-access_memory.
• Memory_timings wikiPageWikiLink Memory_Reference_Code.
• Memory_timings wikiPageWikiLink Memory_bandwidth.
• Memory_timings wikiPageWikiLink Random-access_memory.
• Memory_timings wikiPageWikiLink Random_access_memory.
• Memory_timings wikiPageWikiLink Serial_Presence_Detect.
• Memory_timings wikiPageWikiLink Serial_presence_detect.
• Memory_timings wikiPageWikiLink Throughput.
• Memory_timings wikiPageWikiLink VRAM.
• Memory_timings wikiPageWikiLink Video_memory.
• Memory_timings wikiPageWikiLinkText "Memory timings".
• Memory_timings wikiPageWikiLinkText "Timings".
• Memory_timings wikiPageWikiLinkText "latency".
• Memory_timings wikiPageWikiLinkText "memory cycle time".
• Memory_timings wikiPageWikiLinkText "memory timings".
• Memory_timings hasPhotoCollection Memory_timings.
• Memory_timings wikiPageUsesTemplate Template:Rp.
• Memory_timings subject Category:Computer_memory.
• Memory_timings type Array.
• Memory_timings type Datum.
• Memory_timings comment "Memory timings or RAM timings measure the performance of DRAM memory using four parameters: CL, TRCD, TRP, and TRAS in units of clock cycles; they are commonly written as four numbers separated with dashes, e.g. 7-8-8-24. The fourth (tRAS) is often omitted, and a fifth, the Command rate, sometimes added (normally 2T or 1T - also 2N, 1N). These parameters specify the latencies (time delays) that affect speed of random access memory. Lower numbers usually imply faster performance.".
• Memory_timings label "Memory timings".
• Memory_timings sameAs كمون_ذاكرة.
• Memory_timings sameAs Latence_CAS.
• Memory_timings sameAs זמן_אחזור.
• Memory_timings sameAs Memóriakésleltetés.
• Memory_timings sameAs m.05pddrz.
• Memory_timings sameAs Латентность_(характеристика_оперативной_памяти).
• Memory_timings sameAs Q892036.
• Memory_timings sameAs Q892036.
• Memory_timings wasDerivedFrom Memory_timings?oldid=655399916.
• Memory_timings isPrimaryTopicOf Memory_timings.