1. 双倍数据速率版本 5 (DDR5)：
DDR5 代表双倍数据速率 5 同步动态随机存取存储器 (DDR5 SDRAM) 。 DDR5 或 GDDR5 具有更高的内存带宽和内存时钟速度，这就是它比 DDR3 用于游戏目的的原因。 DDR5只用在显卡上，另一方面DDR3也用在电脑上。尽管 DDR3 的延迟很低，但 DDR5 提供了比 DDR3 更好的性能。
2. 双倍数据速率版本 3 (DDR3)：
DDR3 代表双倍数据速率 3 同步动态随机存取存储器 (DDR3 SDRAM) 。在 DDR3 中执行自刷新和自动刷新以刷新其内容。自刷新通常用于较低的功耗，这就是 DDR3 功耗较低的原因。 DDR3 的时钟速度低于 DDR5，后者在 800-2133 MHz 之间变化。
DDR5和DDR3的区别：
| S.NO | DDR5 SDRAM | DDR3 SDRAM |
|---|---|---|
| 1. | DDR5 is newer than DDR3. | Whereas earlier it was used in computer systems. |
| 2. | DDR5 or GDDR5 is used by PS4 (Playstation 4). | While it is used by Xbox. |
| 3. | DDR5 is better for gaming than DDR3 because it (DDR5) has more memory bandwidth. | Whereas it is better for office task than DDR5. |
| 4. | The speed of DDR5 is faster than DDR3. | Whereas it is comparatively slow. |
| 5. | DDR5 or GDDR5 is mainly used in graphics cards. | While DDR3 is mainly used in computers. |
| 6. | DDR5 is costlier than DDR3. | While the cost of DDR3 is cheaper than DDR5. |
| 7. | DDR5 has more latency than DDR3. | While DDR3 has lower latency than DDR5. |
| 8. | DDR5 has higher memory clock speed than DDR3. | While DDR3 has lower memory clock speed than DDR5. |