Here are the full technical specs.

Feature Summary
826 million transistors on 40nm fabrication process
PCI Express®2.0 x16 bus interface
GDDR5 memory
Microsoft®DirectX®10.1 support
Shader Model 4.1
32 bit floating point texture filtering
Indexed cube map arrays
Independent blend modes per render target
Pixel coverage sample masking
Read/write multi‐sample surfaces with shaders
Gather4 texture fetching
Unified Superscalar Shader Architecture
640 stream processing units
Dynamic load balancing and resource allocation for vertex, geometry, and pixel shaders
Common instruction set and texture unit access supported for all types of shaders
Dedicated branch execution units and texture address processors
128‐bit floating point precision for all operations
Command processor for reduced CPU overhead
Shader instruction Up to 128 texture fetches per clock cycle
Up to 128 textures per pixel
Fully associative multi‐level texture cache design
DXTC and 3Dc+ texture compression
High resolution texture support (up to 8192 x 8192)
Fully associative texture Z/stencil cache designs
Double sided hierarchical Z/stencil buffer
Early Z test and Fast Z Clear
Lossless Z & stencil compression (up to 128:1)
Lossless color compression (up to 8:1)
Up to 8 render targets (MRTs) with anti‐aliasing
Accelerated physics processing
Dynamic Geometry Acceleration
High performance vertex cache
Programmable tessellation unit
Accelerated geometry shader path for geometry amplification
Memory read/write cache for improved stream output performance
Anti-aliasing features
Multi-sample antialiasing (2, 4, or 8 samples per pixel)
and constant caches
Up to 24x Custom Filter AntiAliasing (CFAA)
Adaptive supersampling and multi‐sampling
Gamma correct
Super AA (ATI CrossFireX™ configurations only7)
All antialiasing features compatible with HDR rendering
Texture filtering features
2x/4x/8x/16x high quality adaptive anisotropic filtering modes (up to 128 taps per pixel)
128-bit floating point HDR texture filtering
sRGB filtering (gamma/degamma)
Percentage Closer Filtering (PCF)
Depth & stencil texture (DST) format support
Shared exponent HDR (RGBE 9:9:9:5) texture format support
OpenGL 3.0 support
ATI Avivo™ HD Video and Display Platform1
Unified Video Decoder (UVD) for H.264/AVC, VC‐1, and MPEG‐2 video formats
High definition (HD) playback of Bluray and HD DVD video2
Dual stream (HD+SD) playback support
DirectX® Video Acceleration 1.0 & 2.0 support
Support for BD‐Live certified applications
Hardware DivX and MPEG1 video decode acceleration
ATI Avivo HD Video Post Processor1
Color space conversion
Chroma subsampling format conversion
Horizontal and vertical scaling
Gamma correction
Advanced vector adaptive perpixel deinterlacing
De‐blocking and noise reduction filtering
Detail enhancement
Color vibrance and flesh tone correction
Inverse telecine (2:2 and 3:2 pull down correction)
Bad edit correction
Enhanced DVD upscaling (SD to HD)9
Automatic dynamic contrast adjustment
Two independent display controllers
Drive two displays simultaneously with independent resolutions, refresh rates, color controls and video overlays for each display
Full 30‐bit display processing
Programmable piecewise linear gamma correction, color correction, and color space conversion
Spatial/temporal dithering provides 30bit color quality on 24bit and 18bit displays
High quality pre and postscaling engines, with underscan support for all display outputs
Contentadaptive deflicker filtering for interlaced displays
Fast, glitch free mode switching
Hardware cursor
Two integrated duallink DVI display outputs
Each supports 18, 24, and 30bit digital displays at all resolutions up to 1920x1200 (single‐link DVI) or 2560x1600 (dual‐link DVI)3
Each includes a dual‐link HDCP encoder with on‐chip key storage for high resolution playback of protected content4
Two integrated 400 MHz 30‐bit RAMDACs
Each supports analog displays connected by VGA at all resolutions up to 2048x15363
DisplayPort output support
24 and 30bit displays at all resolutions up to 2560x16003
HDMI output support
All display resolutions up to 1920x10803
Integrated HD audio controller with support for stereo and multi‐channel (up to 7.1) audio formats, including AC‐3, AAC, DTS5, enabling a plug‐and‐play audio solution over HDMI
Integrated AMD Xilleon™ HDTV encoder
Provides high quality analog TV output (component/S‐video/composite)
Supports SDTV and HDTV resolutions
Underscan and overscan compensation
Seamless integration of pixel shaders with video in real time
VGA mode support on all display outputs
ATI PowerPlay™ technology6
Advanced power management technology for optimal performance and power savings
PerformanceonDemand
Constantly monitors GPU activity, dynamically adjusting clocks and voltage based on user scenario
Clock and memory speed throttling
Voltage switching
Dynamic clock gating
Central thermal management – onchip sensor monitors GPU temperature and triggers thermal actions as required
ATI CrossFireX™ Multi‐GPU Technology
Scale up rendering performance and image quality with up to two GPUs