Please fill out the Build Advice form in my signature. That build will not run games very well, and neither will a X6 for the money. You want more than 1GB, and your personal experiences aside, I STRONGLY advise you not to get that HEC. It does not have an active PFC nor is it in any way certified to actually provide 650W. Add in the one year warranty and the fact that it's an HEC and it's all bad.