Which memory to choose for this old desktop

samis

Honorable
Nov 4, 2013
16
0
10,510
Hey guys, I have a pretty old desktop that I use sometimes and wanted to speed up a little. It has 2gb of ram currently and when I updated the OS to win 7, it started slowing down a bit as expected.

Currently it uses 4 modules of 512mb DDR2 dual channel PC2-4300 (266 mhz) ram. Can I put in 2 gb sticks of PC 5300 (667 mhz) ram or do I have to put in PC 4300?
 

samis

Honorable
Nov 4, 2013
16
0
10,510
Thanks for the suggestion. I will definitely upgrade the system soon. But ill try and find some used ones for now. However, going back to my question, which RAM should be used ideally if I was to upgrade in the meantime.