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
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Overclocking the ASUS GTX 660 DirectCU II OC Edition with GPU Tweak - YouTube