i have 512mb of ram in my dell dimension and it says its ddr2 533mhz im looking to get 2gb would i have to get ddr2 ram aswell or could i get ddr2 ram at 800mhz?
It would probably be better to get Ram as close as possible if your running them together. But more than likley the DDR2 800 will just backclock to DDR2 533 speeds if you run them together.