Currently got 512DDR 400 PC320
Now im looking at upgrading due to recently upgradin my graphics card to a geforce 6 6600 GT and i think im running borderline as my comp seems to run slow when usin multiple applictions.
So what are my options? Could prob stretch to 2 gig prices but if 1 gig is more than enough ill do that

Heard good things about corsair so any recommendations would be appreciated

Oh current spec-
asus 64 bit 3400
5 PCI SLOT& 8X AGP
200 gig hard drive
+512DDR memory DDR400(pc3200)
400 psu
Geforce 6 6600 gt 256MB GC