Asus GeForce GTX 660 DirectCU 2 Top 2GB GDDR5 PCIe GTX660-DC2T-2GD5 Reviews, Pros and Cons | TechSpot
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EVGA GeForce GTX 660 SuperClocked 02G-P4-2662-KR G-SYNC Support 2GB GDDR5 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
PNY VCGGTX660XPB G-SYNC Support GeForce GTX 660 2GB 192-Bit GDDR5 PCI Express 3.0 x16 HDCP Ready SLI Support Video Card GPUs / Video Graphics Cards - Newegg.com