eVGA e-GeForce GTX280 1GB DDR3 PCI-Express 2.0 Graphics Card with Free Special Edition EVGA Precision Overclocking Utility PCI Express 2.0 Compatible GeForce GTX 280 with 602MHz clock 1GB 512-bit .8 ns GDDR3 memory 1007 MHz clock/2214 MHz effective memory rate Full DirectX 10 and Open GL 2.1 Support