Hold on a second here ....
PC-3200 is a DDR1 no? At least I've never seen PC-3200 DDR2, correct me if I'm wrong.
And PC-5300 is DDR2 with 667MHz.
EDIT: Ok, my noob mistake, sorry
> I found PC-3200 DDR2, but there are also PC-3200 DDR1. Since you're putting PC2 on it I assume you meant for DDR2. IMO the different will not that much, but I'd agree with lunyone below, we should see the rest of your system. Mobo mem supports & Processor FSB will add up the calculation ..