ATI Radeon™ HD 4850 GPUs bring the power of graphics ‘supercomputing’ to gamers, setting a new standard for visual computing. Redefine the way you play and take HD gaming to the extreme with best-in-class performance. Add this graphics card to your PC and watch Blu-ray movies and play HD content with incredible visual fidelity1,2 or take your experience to another level with new multimedia capabilities. Do it all with break-through efficiency that doesn’t compromise performance.
Features & Benefits
- The new TeraScale graphics engine features up to 1 teraFLOPS, nearly one billion transistors and up to 800 stream processors so you can enjoy the high resolutions and fast frame rates previously only available with dual-card systems.
- Get right in the action and experience cinematic gaming with mind-blowing performance in the latest DirextX®10.1 games.
- High performance anisotropic filtering and 24x custom filter anti-aliasing (CFAA) smooth jagged edges and create true-to-life graphics, for everything from grass to facial features.
- ATI Radeon HD 4800 series delivers up to 2x the performance per watt of AMD’s previous generation GPUs.
ATI Radeon™ HD 4850 Graphics Specifications
- 956 million transistors on 55nm fabrication process
- PCI Express 2.0 x16 bus interface
- 256-bit GDDR3/4 memory interface memory interface
- 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
- 800 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 160 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
- Re-Z, and Z Range optimization
- 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
- 800 stream processing units
- 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 anti-aliasing (2, 4, or 8 samples per pixel)
- Up to 24x Custom Filter Anti-Aliasing (CFAA) for improved 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 3.2 support
- ATI Avivo™ HD Video and Display Platform6
- Unified Video Decoder 2 (UVD 2) for H.264/AVC, VC-1, and MPEG-2 video formats
- High definition (HD) playback of Blu-ray and HD DVD video
- Dual stream (HD+SD) playback support
- DirectX Video Acceleration 1.0 & 2.0 support
- Support for BD-Live certified applications
- Hardware DivX and MPEG-1 video decode acceleration
- Accelerated video transcoding & encoding for H.264 and MPEG-2 formats
- ATI Avivo Video Post Processor6
- Color space conversion
- Chroma subsampling format conversion
- Horizontal and vertical scaling
- Gamma correction
- Advanced vector adaptive per-pixel de-interlacing
- 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)
- 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 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 1920×1200 (single-link DVI) or 2560×1600 (dual-link DVI)2
o Each includes a dual-link HDCP encoder with on-chip key storage for high resolution playback of protected content3
- Each supports 18-, 24-, and 30-bit digital displays at all resolutions up to 1920×1200 (single-link DVI) or 2560×1600 (dual-link DVI)2
- Two integrated 400 MHz 30-bit RAMDACs
- Each supports analog displays connected by VGA at all resolutions up to 2048×15362
- DisplayPort output support
- 24- and 30-bit displays at all resolutions up to 2560×16002
- HDMI® output support
- All display resolutions up to 1920×10802
- Integrated HD audio controller with support for stereo and multi-channel (up to 7.1) audio formats, including AC-3, AAC, DTS & Dolby True-HD4, 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
- Unified Video Decoder 2 (UVD 2) for H.264/AVC, VC-1, and MPEG-2 video formats
- 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 Technology
- Scale up rendering performance and image quality with two, three, or four GPUs
- Integrated compositing engine
- High performance dual channel bridge interconnect1
