It's depends on the Type & Speed of your CPU that's bottlenecking you Graphics Performance... 8Gb of 1333Mhz Memory is your best bet... Known Facts: Dual-Core Processors Bottleneck any processor in the GTX 400 Family and Radeon HD5000 Family and above... Quad-Core Processors Bottleneck the GTX 500 & Radeon HD6900 Family Respectively... Six-Core Processors works with Any Graphic Card without Bottlenecking....