EVGA GeForce GTX 660 - 02G-P4-2660-KR G-SYNC Support 2GB DDR5 PCI Express 3.0 x16 HDCP Ready SLI Support Video Card - Newegg.com
ASUS GTX660 TI-DC2O-2GD5 G-SYNC Support GeForce GTX 660 Ti 2GB 192-Bit GDDR5 PCI Express 3.0 x16 HDCP Ready SLI Support Video Card GPUs / Video Graphics Cards - Newegg.com
GF660GTX2GEPB PNY Nvidia GeForce GTX 660 2048MB PCI Video Graphics Car