EVGA 01G-P3-1281-AR GeForce GTX285 1 GB GDDR3 PCI-Express 2.0 Graphics Card PCI Express 2.0 GeForce GTX 285 with 648MHz clock 1GB 512-bit .8ns GDDR3 memory 1242MHz clock with 2484MHz effective memory rate and 1476MHz shader clock Full DirectX 10 and Open GL 2.1 Support