When the system Requirements say you need 8 gigs of ram, which DDR ram do they mean? And do they mean the top rated ram in that DDR category? I'm curious because i have 8 gigs of DDR2 ram in this old computer but i just noticed that its 400MHz. So i feel the system requirements may mean a lot more powerful ram. FYI i just ebayed 2 2gb 800MHz ddr2 ram for $8 canadian, so i will have better ram eventually.