6870
http://www.newegg.com/Product/Product.aspx?Item=N82E16814161396&nm_mc=OTC-Shopping&cm_mmc=OTC-Shopping-_-Video+Cards-_-Hightech+Information+System+Ltd.-_-14161396
GTX 460
http://www.bing.com/shopping/evga-geforce-gtx-460-fpb-graphics-card-gf-gtx-460-1-gb/p/1CFE2CEF1D1B03AA0001?q=nvidia+460&lpq=nvidia%20460&qpvt=nvidia+460&FORM=HURE
GTX 480
http://www.bing.com/shopping/evga-geforce-gtx-480/p/014EF085A8087F4A5020?q=nvidia+480&lpf=0&lpq=nvidia%2b480&FORM=EGCA&lppc=16
Radeon 7770
http://www.bing.com/shopping/sapphire-radeon-hd-7770-graphics-card-radeon-hd-7770-1-gb/p/5B1D83A127F2216F0001?q=radeon+7770&lpf=0&lpq=radeon%2b7770&FORM=ENCA&lppc=16
http://www.newegg.com/Product/Product.aspx?Item=N82E16814161396&nm_mc=OTC-Shopping&cm_mmc=OTC-Shopping-_-Video+Cards-_-Hightech+Information+System+Ltd.-_-14161396
GTX 460
http://www.bing.com/shopping/evga-geforce-gtx-460-fpb-graphics-card-gf-gtx-460-1-gb/p/1CFE2CEF1D1B03AA0001?q=nvidia+460&lpq=nvidia%20460&qpvt=nvidia+460&FORM=HURE
GTX 480
http://www.bing.com/shopping/evga-geforce-gtx-480/p/014EF085A8087F4A5020?q=nvidia+480&lpf=0&lpq=nvidia%2b480&FORM=EGCA&lppc=16
Radeon 7770
http://www.bing.com/shopping/sapphire-radeon-hd-7770-graphics-card-radeon-hd-7770-1-gb/p/5B1D83A127F2216F0001?q=radeon+7770&lpf=0&lpq=radeon%2b7770&FORM=ENCA&lppc=16