Running dual ATI Radeon 5770 graphics on Alienward Area 51 model purchased in 2010. Any suggestions on updating/replacing graphics cards?
here we got a solo 7990 working; it required additional items to work w/the stock psu/mthrbrd :
Caliber of cards like Dual 7990's & equivalent power requirements most likely need a psu upgrade, & then thermal-issues need addressed. (92mm rear case fan, dual top 120mm fans etc).
Here, a 290x with success:
Before it was discontinued, Area51 came with dual 6990's, or 590's. Tom's video chart (copy/paste):
I do not give make/model recommendations; I'll chime in to help you run whatever you decide to get.