ASUS ENGTX580 DCII/2DIS/1536MD5 GeForce GTX 580 is the world's fastest DirectX 11 GPU. With screaming performance and an innovative new thermal design, ASUS GeForce GTX 580 rips through the latest games while running quieter than the previous generation. ASUS GeForce GTX 580 - don't play DX11 without it. -Features-Speed up heat dissipation with 600% more airflow via exclusive DirectCU with dual fan design-Pump up graphics performance with Super Alloy Power that delivers 15% Performance boost, 2.5 longer lifespan, 35C cooler operation-Crank up 50% faster clock speed with exclusive Voltage Tweak-3D Vision Surround for immersive 3D gaming -DirectX 11 done right & Windows 7 compatible -Specifications-Graphics Engine: NVIDIA GeForce GTX 580-Bus Standard: PCI Express 2.0 x16-Video Memory: GDDR5 1.5GB-Engine Clock: 782 MHz-CUDA Cores: 512-Memory Clock: 4008 MHz ( 1002 MHz GDDR5 )-RAMDAC: 400 MHz-Memory Interface: 384-bit-Resolution: D-Sub Max Resolution: 2048x1536 / DVI Max Resolution: 2560x1600-Interface: D-Sub Output : Yes x 1 (via DVI to D-Sub adaptor x 1) / DVI Output : Yes x 2 (DVI-I) / HDMI Output : Yes x 1 / Display Port : Yes x 1 (Regular DP)-AUS Features: DirectCU Series and Super Alloy Power-Software: ASUS Utilities & Driver-Dimensions: 11.5" x 5.0" inches-Note: To have the best cooling performance ASUS ENGTX580 DCII/2DIS/1536MD5 extends the Fansink to 2.5 slot, please check your Motherboard slot space before SLI. Dual 8pin Power Connector is required for the best performance