Used - Very Good: EVGA GeForce GTX 600 SuperClocked GeForce GTX 660 Video Card 02G-P4-2662-KR - Newegg.com
ASUS Video Card GTX 660 2GB 192Bit GDDR5 Graphics Cards for nVIDIA Geforce GTX660 Used VGA Cards stronger than GTX 750 Ti - AliExpress Computer & Office