XFX ATI Radeon HD 5870 1GB DDR5 Mini HDMI DisplayPort Dual DVI PCI-Express 2.1 X16 Double Height Graphics Video Card HD-587X-ZNFC.XFX Part Number: HD-587X-ZNFCATI Model Number: Radeon HD 5870Specifications:Interface: PCI Express 2.1 x16Chipset Manufacturer: ATIGPU: Radeon HD 5870Core Clock: 850 MHzStream Processors: 1600 Stream ProcessorsEffective Memory Clock: 1200MHz (4.8Gbps)Memory Size: 1GBMemory Interface: 256-BitMemory Type: DDR53D API:DirectX 11OpenGL 3.2Ports:1 x HDMI1 x DisplayPort2 x DVIRAMDAC: 400MHzMax Resolution: 2560 x 1600Eyefinity Support: YesCrossFireX Support: YesCooler: With FanDual-Link DVI Supported: YesHDCP Ready: YesSystem Requirements:Minimum 500 Watt Power Supply Requirement