Product Description: 100% tested working before shipment 100% Genuine 4GB GDDR5 128 Bit GPU:lexa Core frequency:1183MHz Memory frequency:6000MHz Interface Type:PCI Express 3.0 16X 3D API: DirectX 12 , Support HDCP:YES Recommended power: 400W aboveSupport system : Windows 7(64bit) ,Windows 10(64bit)