Sapphire Radeon HD4850 

Specification

The ATI Radeon HD 4850 GPU brings 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. The new TeraScale graphics engine delivers an immersive, cinematic gaming experience. Add this GPU to your PC and watch Blu-ray movies and play HD content with incredible visual fidelity.* Do it all with break-through efficiency that doesn?t compromise performance.

	GDDR3 memory 256-bit memory interface
	DirectX® 10.1
	24x custom filter anti-aliasing (CFAA) and high performance anisotropic filtering
	ATI CrossFireX™ multi-GPU support for highly scalable performance
	Use up to four discrete cards with an AMD 790FX based motherboard
	Memory Clock: 993MHz, (1986 Mhz) Core Clock: 625 MHz
	PCI Express® 2.0 supportDynamic geometry acceleration
	Game physics processing capability
	ATI Avivo™HD video and display technologyUnified Video Decoder 2 (UVD)
	ATI PowerPlay™ technology

For more information please visit Sapphire's Website

ATI Radeon™ HD 4800 Series – Overview 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.

Features

• 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
  • 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)
  • 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 2.0 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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  For more information please visit ATI's Website