1. In computing, DDR4 SDRAM, an abbreviation for double
data rate fourth generation synchronous dynamic random-access memory
2. It is a
type of synchronous dynamic random-access memory (SDRAM) with a high bandwidth
("double data rate") interface, expected to be released to the market
sometime in 2013.
3. It is one of the latest variants of dynamic random access
memory (DRAM), some of which have been in use since the early 1970s, and a
proposed higher-speed successor to the DDR2 and DDR3 technologies.
4. It is not
compatible with any earlier type of random access memory (RAM) due to different
signaling voltages, physical interface and other factors.
DDR3 DDR4
DDR3's clock frequencies and data transfer rates 800 to 2133 MT/s
|
DDR4'sclock frequencies and data transfer rates 2133–4266 MT/s
|
Working voltage to 1.2–1.65 V
|
Working voltage 1.05–1.2 V for DDR4
|
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