- 242 million transistors on 55nm fabrication process
- PCI Express 2.0 x16 bus interface
- GDDR3/DDR3/DDR2 memory interface (depending on model)
- Microsoft® DirectX® 10.1 support
- ShaderModel 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
- 80 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 and constant caches
- Up to 32 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, Re-Z, Z Range optimization, and Fast Z Clear
- Lossless Z & stencil compression (up to 128:1)
- Lossless color compression (up to 8:1)
- 8 render targets (MRTs) with anti-aliasing support
- Dynamic Geometry Acceleration
- Programmable tessellation unit
- Accelerated geometry shaderpath for geometry amplification
- Memory read/write cache for improved stream output performance
- Anti-aliasing features
- Multi-sample anti-aliasing (2 or 4 samples per pixel)
- Up to 12x Custom Filter Anti-Aliasing (CFAA) for superior quality
- Adaptive super-sampling and multi-sampling
- Gamma correct
- Super AA (ATI CrossFireX™configurations only)
- All anti-aliasing 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 2.0 support
- ATI Avivo™ HD Video and Display Platform1
- 2nd generation Unified Video Decoder (UVD 2)
- Enabling hardware decode acceleration of H.264, VC-1 and MPEG-2
- Dual stream playback (or Picture-in-picture)
- Hardware MPEG-1, and DivXvideo decode acceleration
- Motion compensation and IDCT
- ATI AvivoVideo Post Processor1
- Enhanced DVD up-conversion to HD
- Color space conversion
- Chromasubsamplingformat conversion
- Horizontal and vertical scaling
- Gamma correction
- Advanced vector adaptive per-pixel de-interlacing
- De-blocking and noise reduction filtering
- Detail enhancement
- Inverse telecine(2:2 and 3:2 pull-down correction)
- Bad edit correction
- Full score in HQV (SD) and HQV (HD) video quality benchmarks
- 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 30-bit color quality on 24-bit and 18-bit displays
- High quality pre- and post-scaling engines, with underscan support for all display outputs
- Content-adaptive de-flicker filtering for interlaced displays
- Fast, glitch-free mode switching
- Hardware cursor
- Two integrated dual-link DVI display outputs
- Each supports 18-, 24-, and 30-bit digital displays at all resolutions up to 1920x1200 (single-link DVI) or 2560x1600 (dual-link DVI)2
- Each includes a dual-link HDCP encoder with on-chip key storage for high resolution playback of protected content3
- Two integrated DVI display outputs
- Primary supports 18-, 24-, and 30-bit digital displays at all resolutions up to 1920x1200 (single-link DVI) or 2560x1600 (dual-link DVI)2
- Secondary supports 18-, 24-, and 30-bit digital displays at all resolutions up to 1920x1200 (single-link DVI only)2
- Each includes a dual-link HDCP encoder with on-chip key storage for high resolution playback of protected content 3
- Two integrated 400MHz 30-bit RAMDACs
- Each supports analog displays connected by VGA at all resolutions up to 2048x15362
- DisplayPortoutput support
- Supports 24-and 30-bit displays at all resolutions up to 2560x1600 2
- Integrated HD audio controller with up to 2 channel 48 kHz stereo or multi-channel (7.1) AC3 enabling a plug-and-play cable-less audio solution4
- HDMI output support
- Supports all display resolutions up to 1920x10802
- Integrated HD audio controller with up to 2 channel 48 kHz stereo or multi-channel (7.1) AC3 enabling a plug-and-play cable-less audio solution4
- 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 shaderswith video in real time
- VGA mode support on all display outputs
- ATI PowerPlay™ Technology5
- Advanced power management technology for optimal performance and power savings
- Performance-on-Demand
- 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 – on-chip sensor monitors GPU temperature and triggers thermal actions as required
- ATI CrossFireX™Multi-GPU Technology6
- Scale up rendering performance and image quality with two GPUs
- Integrated compositing engine
| - Dual channel interconnect is not required for CrossFireX, and may not be included in all product configurations
- Some custom resolutions require user configuration
- Playing HDCP content requires additional HDCP ready components, including but not limited to an HDCP ready monitor, Blu-ray or HD DVD disc drive, multimedia application and computer operating system.
- Subject to digital rights management limitations; maximum supported audio stream bandwidth is 6.144 Mbps
- ATI PowerPlay™ technology consists of numerous power saving features. Not all features may be available in all ATI Radeon HD 4800 Series graphics cards.
- ATI Avivo™ HD is a technology platform that includes a broad set of capabilities offered by certain ATI Radeon™ HD GPUs. Not all products have all features and full enablement of some ATI Avivo™ HD capabilities may require complementary products.
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