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ASUS NVIDIA GeForce GTX 660 (GTX660-DC2O-2GD5) 2GB GDDR5 SDRAM PCI Express 3.0 Graphics adapter for sale online | eBay
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
ASUS GTX 660 Ti DirectCU II Specs | TechPowerUp GPU Database
Asus GeForce GTX 660 2GB GDDR5 PCI-E Video Card - GTX660-DC2O-2GD5
NVIDIA GeForce GTX 660 Ti Video Card Review w/ ASUS, EVGA & MSI - Page 2 of 15 - Legit Reviews