PowerColor HD5550 2GB DDR3 PCI-E 128-bit with DVI/HDMI/VGA

* 627 million 40nm transistors

* TeraScale 2 Unified Processing Architecture
   - 320 Stream Processing Units
   - 16 Texture Units
   - 32 Z/Stencil ROP Units
   - 8 Color ROP Units

* DDR3 memory interface

* PCI Express 2.1 x16 bus interface

* DirectX® 11 support
   - Shader Model 5.0
   - DirectCompute 11
   - Programmable hardware tessellation unit
   - Accelerated multi-threading
   - HDR texture compression
   - Order-independent transparency

* OpenGL 3.2 support

* Image quality enhancement technology
   - Up to 24x multi-sample and super-sample anti-aliasing modes
   - Adaptive anti-aliasing
   - 16x angle independent anisotropic texture filtering
   - 128-bit floating point HDR rendering

* ATI Eyefinity multi-display technology
   - Three independent display controllers
   - Drive three displays simultaneously with independent resolutions,
     refresh rates, color controls, and video overlays
   - Display grouping
   - Combine multiple displays to behave like a single large display

* ATI Stream acceleration technology
   - OpenCL Support
   - DirectCompute 11
   - Accelerated video encoding, transcoding, and upscaling

* ATI CrossFireX™ multi-GPU technology
   - Dual GPU scaling

* ATI Avivo™ HD Video & Display technology
   - UVD 2 dedicated video playback accelerator
   - Advanced post-processing and scaling
   - Dynamic contrast enhancement and color correction
   - Brighter whites processing (blue stretch)
   - Independent video gamma control
   - Dynamic video range control
   - Support for H.264, VC-1, MPEG-2, and Adobe Flash
   - Dual-stream 1080p playback support10,11
   - DXVA 1.0 & 2.0 support
   - Integrated dual-link DVI output with HDCP (Max resolution: 2560x1600)
   - Integrated HDMI 1.3 output with Deep Color, xvYCC wide gamut support,
     and high bit-rate audio (Max resolution: 1920x1200)
   - Integrated VGA output (Max resolution: 2048x1536)
   - Integrated HD audio controller
      - Output protected high bit rate 7.1 channel surround sound over HDMI
        with no additional cables required
      - Supports AC-3, AAC, Dolby TrueHD and DTS Master Audio formats

* ATI PowerPlay™ power management technology
   - Dynamic power management with low power idle state
   - Ultra-low power state support for multi-GPU configurations

* Certified drivers for Windows 7, Windows Vista, and Windows XP

http://www.powercolor.com/us/products_features.asp?id=265#Specification