ASUS ENGTX560 DCII OC/2DI/1GD5 GeForce GTX 560 (Fermi) 1GB 256-bit GDDR5 PCI Express 2.0 x16 HDCP Ready SLI Support Video Card, ENGTX560 DCII OC/2DI/1GD5 Factory overclocked to 850 MHz for faster performance DirectCU II dual fan cooling design performs up to 20% cooler Super Alloy Power for up to 15% performance boost, 35C cooler operation, and 2.5 times longer lifespan Voltage Tweak provides a higher overclocking threshold