DDR2和DDR3的区别

DDR2和DDR3都是双倍数据速率 (DDR) 的版本。
DDR2代表双倍数据速率版本 2， DDR3代表双倍数据速率版本 3。

DDR2 和 DDR3 对相同技术进行了平方测量增强，并额外增加了每个时钟周期的知识转移量。
DDR2 RAM 每个周期提供四次知识转移，而 DDR3 将增加到八次。向前100Mhz的基本时钟速度，DDR RAM可以提供1600MB/s的信息量，DDR2提供3200MB/s，DDR3提供6400MB/s。很多通常更好。

DDR2和DDR3的区别：

S.NO	DDR2	DDR3
1.	DDR2 stands for Double Data Rate version 2.	Whereas DDR3 stands for Double Data Rate version 3.
2.	The cost of DDR2 is less than DDR3.	While it’s cost is higher or more than DDR2.
3.	Performance-wise, DDR2 is superior than DDR2.	While it is average in terms of performance.
4.	Supply voltage for DDR2 is greater than DDR3 which is 1.8 volts.	While for DDR3, supply voltage is 1.5 volts.
5.	DDR2 consumes more power.	While it consumes less power.
6.	The speed of DDR2 is slow in comparison of DDR3.	While the speed of DDR3 is fast in comparison of DDr2.
7.	In DDR2, there is no memory reset option.	While in DDR3, there is provided memory reset option.
8.	Clock speed of DDR2 vary from 400 MHz to 800 MHz.	Whereas the clock speed of DDr3 vary from 800 MHz to 1600 MHz.