ddr2memorysdram
I picked up some DDR2 5300 that was on sale, and found that it would not physically fit on my motherboard. Now I've found some PC2 4200 RAM on the internet for the price I want. My motherboard takes PC 3200. Should I buy the PC2 4200?
The RAM I'm looking at is Kingston KVR533D2N4/1G, and my motherboard is a Gigabyte GA-K8NF-9
It will work although keep in mind the lowest common denominator will be used. In other words the new memory you put in will run at the same speed as the slower stick.
To check for compatibility Crucial's Scanner is very good.
Nope - DDR2 and DDR3 are electrically different and not cross compatible.
Pic: DDR3 on the top. DDR2 below.
Edit: Nice diagram in this answer too: Can you tell DDR and DDR2 apart visually?
Best Answer
DDR2 is not interchangeable/compatible with DDR memory. Your motherboard will only take DDR memory, and the memory you linked to is DDR2 memory, so no, it will not work. You need to find some DDR. Your motherboard is spec'd for DDR400, but it would be OK to get faster DDR RAM; it would just run at 400MHz, so you wouldn't get any speed improvement. Google Product Search might be a good starting place.