Asus GeForce GTX 660 DirectCU 2 Top 2GB GDDR5 PCIe GTX660-DC2T-2GD5 Reviews, Pros and Cons | TechSpot
ASUS GTX660 TI-DC2T-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
MSI GTX 660 Ti PE OC Specs | TechPowerUp GPU Database