If you have computer or laptop, you must have heard about computer memory DDR2 or DDR3. We will take a look at the differences between them. DDR2 stands for “double data rate SDRAM”. It supersedes the original DDR SDRAM. DDR2 can only be used in motherboard that support it. It can’t work in DDR or DDR3 equipped motherboards and vice versa. How about the speed? with a memory clock frequency of 100 MHz, DDR2 gives a maximum transfer rate of 3200 MB/s.

ddr2

How about DDR3? DDR3 is double-data-rate three SDRAM. The main characteristic of DDR3 are a high bandwidth interface and the ability to transfer at twice the data rate. DDR3 also provides a reduction in power consumption of 30% compared to DDR2. The next version of computer memory is DDR4 .

ddr2 vs ddr3

However, most computer experts recommend to upgrade to DDR3 if you are still using DDR2 for your computer or laptop. Laptop memory laptop RAM upgrade is a way to gain DDR3′s advantages.  So, pick DDR3 for your computer/laptop memory.