DDR3 JEDEC SPECIFICATION PDF

The actual DRAM arrays that store the data are similar to earlier types, with similar performance. With two transfers per cycle of a quadrupled clock signal , a bit wide DDR3 module may achieve a transfer rate of up to 64 times the memory clock speed. Samsung played a major role in the development and standardisation of DDR3. DDR3 was officially launched in , but sales were not expected to overtake DDR2 until the end of , or possibly early , according to Intel strategist Carlos Weissenberg, speaking during the early part of their roll-out in August This reduction comes from the difference in supply voltages: 1. The 1.

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DDR3 vs. Index What is DDR3? What is DDR3? To provide compatibility and interchangeability for computer memory, the structure and form factor are controlled by a standards organization known as JEDEC. JEDEC specifies voltages, speeds, timings, communication protocols, bank addressing, and many other factors in the design and development of memory DIMMs.

Taking a closer look at publications at www. They are a starting point for enthusiast memory companies. Initial DDR3 offerings will be and will quickly follow. The speed is important because it matches the bus speed of the new Intel processors. Since DDR3 is designed to run at higher memory speeds the signal integrity of the memory module is now more important.

DDR3 also uses more internal banks - 8 instead of the 4 used by DDR2 - to further speed up the system. More internal banks allow advance prefetch to reduce access latency. This should become more apparent as the size of the DRAM increases in the future. DDR3 further reduces the memory voltage. In the past few years we have moved from 2. DDR3 drops memory voltage to 1.

There are also additional built-in power conservation features with DDR3 like partial refresh. This could be particularly important in mobile applications where battery power will no longer be needed just to refresh a portion of the DRAM not in active use. There is also a specification for an optional thermal sensor that could allow mobile engineers to save further power by providing minimum refresh cycles when the system is not in high performance mode.

The higher speeds are available at lower voltage, with 1. There are many features that will not make much difference in DDR3 performance until we begin to see even faster and higher capacity memory. Post Your Comment Please log in or sign up to comment. What would end up being better, if I get the max amount of memory for the motherboard.

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DDR3 vs. DDR2

DDR3 vs. Index What is DDR3? What is DDR3? To provide compatibility and interchangeability for computer memory, the structure and form factor are controlled by a standards organization known as JEDEC.

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Examine DDR3 memory with an oscilloscope

Westlake Village, Calif. This registered buffer offers quad-rank support for increased capacity in server memory. Availability: Production quantities. Product information: Click here.

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