Jetway ATI Radeon R680 HD 3870 X2 PCI-E Chipset : ATI Radeon HD 3870X2 - System Interface : PCI-Express2.0 - CLK/MLK : 775MHz/ 900*2MHz - Memory Size : DDR3 1024MB / 512-bit - RAMDAC : 400MHz - Connector : HDTV, Dual DVI-I DVI w/HDCP (HDMI adaptor) Highlight - RADEON HD X3870X2 GPU - 32-bit floating point texture filtering - Lossless Z Compression & Fast Z-Buffer Clear - Hierarchical Z-buffer with Early Z test - HDMI output support Main Features - 320x2 stream processors ? More than enough horsepower to support the most demanding graphics applications. - 2x/4x/8x/16x high quality adaptive anisotropic filtering modes (up to 128x2 taps per pixel) - Up to 128x2 textures per pixel - ATI CrossFireX ? Upgrade to even greater 3D performance quickly and easily thanks to plug-and-play ATI CrossFireX multi-GPU technology. - Accelerated MPEG-2, MPEG-4, DivX, WMV9, VC-1, and H.264 decoding and transcoding - Motion compensation, IDCT, DCT and color space conversion - Fully distributed design with 512-bit internal ring bus for memory reads and writes - ATI Avivo Video Post Processor control Driver & Support - Windows XP / Vista - Linux Compatible