📜  DDR3和DDR4之间的区别

📅  最后修改于: 2021-06-28 17:14:34             🧑  作者: Mango

DDR3和DDR4都是双倍数据速率(DDR)的版本。

双倍数据速率版本3(DDR3):
在DDR3中,执行自动刷新和自刷新以刷新其内容。通常,自刷新用于降低功耗,并且DDR3的功耗比DDR2的功耗低。 DDR3的时钟速度在800 MHz至2133 MHz之间变化,其中2133 MHz在某些情况下是其峰值,通常时钟速度在1600至1800 MHz之间变化。

双倍数据速率版本4(DDR4):
在DDR4中,仅执行自刷新以刷新其内容,这就是功耗较低的原因。 DDR4的最小时钟速度为2133 MHz,并且没有定义的最大时钟速度。

让我们看一下DDR3和DDR4的数据速率和带宽图:

在上图中,我们可以看到DDR3的时钟速度在1600至1800 MHz之间变化,并且其带宽增加了,但小于DDR4。 DDR4的时钟速度从DDR3的剩余位置开始,但是没有定义最大时钟速度。

让我们看看它们之间的区别,下面以表格形式给出:

S.NO DDR3 DDR4
1. DDR3 stands for Double Data Rate version 3. Whereas DDR4 stands for Double Data Rate version 4.
2. The cost of DDR3 is less than DDR4. While it’s cost is higher or more than DDR3.
3. In DDR3, auto-refresh and self-refresh are performed to refresh its content. While in DDR4, only self-refresh is performed to refresh its content.
4. DDR3 consumes less power than DDR2 but more than DDR4. Whereas DDR4 consumes less power than DDR3.
5. The speed of DDR3 is slightly slow in comparison of DDR4. While it’s speed is faster than DDR3.
6. DDR3 has a maximum of 16 GB memory. While DDR4 has no maximum limit or capability.
7. The clock speed of DDR3 vary from 800 MHz to 2133 MHz. While the minimum clock speed of DDR4 is 2133 MHz and it has no defined maximum clock speed.
8. DDR3 has lower latency than DDR4. While DDR4 has slightly more latency than DDR3.
9. DDR3 was used earlier in computer systems. While DDR4 is used now-a-days in computer systems.