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 Features
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- By David_W @Aug 18, 2008
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ATI Radeon™ HD 4800 Series 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. With one teraFLOPS on tap, the TeraScale graphics engine delivers an immersive, cinematic gaming experience. Add this graphics card to your PC and watch Blu-ray movies and play HD content with incredible visual fidelity or take your experience to another level with new multimedia capabilities. Do it all with break-through efficiency that doesn’t compromise performance. Redefine HD Gaming
With more than twice the processing power of previous generation AMD discrete graphics cards, ATI Radeon HD 4800 Series graphics cards deliver a cinematic gaming experience and unprecedented performance. The new TeraScale graphics engine combines the power of one teraFLOPS, 800 stream processors and next generation GDDR5 memory to propel you deep into your gameplay with seamless frame rates and high resolutions. Enhanced anti-aliasing (AA) and anisotropic filtering create striking graphics with unparalleled realism so you can max out the settings of the most demanding next-generation games or revitalize your favorite titles. Play today while preparing for tomorrow with tessellation, support for DirectX® 10.1 and scalable ATI CrossFireX™ technology. Go Beyond HD Video
Add an ATI Radeon HD 4800 Series graphics card to your PC and watch the latest Blu-ray and HD movies play with incredible fidelity1 – upscale to nearly twice the display resolution of HD content.2 Take full advantage of Blu-ray functionality with dual-stream, picture in picture (PIP) capabilities. Sophisticated new features within ATI Avivo™ HD technology give you the freedom and flexibility to edit videos quickly and convert them to H.264 and MPEG-2 formats 1.8x faster than real-time.3 Support for the latest audio visual interconnects ensures you can take advantage of the latest display technology. Break-through Efficiency
Like their predecessors, the ATI Radeon HD 4800 Series graphics cards offer optimal performance and break-through efficiency with platform-independent intelligent power management. Regardless of platform, these graphics cards deliver the power needed to blaze through even the most intense games while intuitively conserving energy at idle or when demand is low. - ATI Radeon HD 4800 Series – Key Features
- TeraScale Graphics Engine - The new TeraScale graphics engine features over one teraFLOPS, nearly one billion transistors and 800 stream processors so you can enjoy the high resolutions and fast frame rates previously only available with dual-card systems.
- Advanced Memory - GDDR5 memory provides twice the bandwidth per pin of GDDR3.
- Enhanced Anti-Aliasing & Anisotropic Filtering - 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.
- DirectX® 10.1 - Play today while preparing for tomorrow with state-of-the-art DirectX 10.1 graphics capabilities.
- ATI CrossFireX™ Technology - ATI CrossFireX™ technology with up to quad GPU support offers superior scalability so your system is ready to level up when you are.
- PCI Express 2.0 - Support for PCI Express 2.0 will prepare you for bandwidth-hungry games and 3D applications.
- Unified Video Decoder 2 (UVD 2) - UVD 2 frees up your CPU for other tasks so you get The Ultimate Visual Experience™ for even the most processing-intensive content, including VC-1, H.264 and now MPEG-2. Also, take full advantage of Blu-ray functionality with dual-stream, picture in picture (PIP) capabilities.
- Accelerated Video Transcoding (AVT) - AVT allows you to convert videos to H.264 and MPEG-2 formats up to 19x faster than when using a just CPU.3 Full 1080p files can be converted to H.264 and MPEG-2 up to 1.8x faster than real-time.3
- Upscale Beyond 1080p - Watch the hottest Blu-ray movies or other HD content at full 1080p display resolution and beyond.1
- Enhanced DVD Upscaling - Watch standard DVD movies in near high-definition quality with DVD upscaling. The GPU uses post processing algorithms to enhance standard and low resolution videos and movies on your HD display.
- Dynamic Contrast - Dynamic Contrast automatically adjusts the contrast and brightness during scenes to consistently deliver a crisp, vibrant picture.
- HDMI - Enjoy the latest audio technologies using HDMI with 7.1 digital surround sound support. Also, xvYCC support allows the user to enjoy a wider range of color when connected to a capable HDTV.
- Dynamic Power Management - ATI Radeon HD 4800 Series graphics cards deliver high performance when needed and conserve power when the demand on the graphics processor is low.
- More Performance Per Watt - ATI Radeon HD 4800 series delivers up to 2x the performance per watt of AMD’s previous generation GPUs.
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Specifications
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- by David_W @Aug 18, 2008
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956 million transistors on 55nm fabrication process PCI Express 2.0 x16 bus interface 256-bit GDDR3/4/5 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
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 2.1 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 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 400 MHz 30-bit RAMDACs
- Each supports analog displays connected by VGA at all resolutions up to 2048x15362
- DisplayPort output support
- 24- and 30-bit displays at all resolutions up to 2560x16002
- HDMI output support
- All display resolutions up to 1920x10802
- Integrated HD audio controller with support for stereo and multi-channel (up to 7.1) audio formats, including AC-3, AAC, DTS, DTS-HD & 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
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
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