hi,
1) single zotac gtx 680 2GB AMP?
2) 2 zotac gtx 670 AMP SLI?
3) 2 HIS HD 7950 crossfire?
4) 2 HIS Radeon HD 7970 crossfire?
can you suggest to me a nice powerful setup (max 2 graphics cards! connection)?
and which is the best to buy from?, HIS, SAPPHIRE, EVGA, ASUS, ZOTAC, MSI?