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Radeon HD 3800 Series Specifications

Radeon HD 3800 Series Specifications

Technical details on the ATI Radeon computer graphics video card.

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Radeon Specifications

Radeon HD 3800 Reviews

Bit-Tech Reviewers Said:
A good place to start would be power management, as it's probably the single most impressive thing about the Radeon HD 3870 because when you're not gaming, your GPU is sitting there burning coal. AMD has addressed this problem by pulling PowerPlay across from its mobile GPUs and introducing it onto the desktop to deliver a new level of aggressive power management technology to desktop users - the result is a GPU that consumes 16W less power than the competition at idle.
Not only is idle power great though, the card also dynamically changes its clockspeeds depending on GPU load. If you're playing a game that's inherently CPU limited, the Radeon HD 3870 will not be running at full whack. And when the card's running at full load, it consumes the same amount of power as Nvidia�s GeForce 8800 GT.
On a related note, AMD has designed a heatsink/fan combination that's quiet. Not only does it not spin up when you're idling, it also doesn't spin up during heavy gaming sessions either - it's about time we had this from a Radeon. AMD has absolutely hit the nail right on the head with the Radeon HD 3870's stock cooler.
Performance isn't bad either, but it's never really a true contender for the GeForce 8800 GT's crown in the mid-range. But, the point is that the Radeon HD 3870 is currently much cheaper than the GeForce 8800 GT, so if you're willing to sacrifice a little bit of performance and save yourself some money, you could find that the Radeon HD 3870 is a great buy for your needs.



Radeon® HD 3800 Series

ATI Radeon™ HD 3800 Series � Overview

Experience the Power of HD
Experience the power of HD with the ATI Radeon HD 3800 Series of GPUs - graphics processing designed for ultimate HD gaming.

Ultimate HD Gaming
Advance to ultimate HD gaming with incredible performance, life-like graphics and support for Microsoft® DirectX® 10.1. With ATI Radeon™ HD 3800 Series GPUs powering your gaming experience, you’re ready to dominate the battlefield. And thanks to plug-and-play ATI CrossFireX™ upgradeability, you can scale your performance to even greater heights.
Prepare to DOMINATE!

HD Video Beyond 1080p
The latest Blu-ray and HD DVD movies play smoothly at full 1080p and your CPU is unbound for other tasks thanks to the Unified Video Decoder and ATI Avivo™ HD video and display technology. Enjoy quality to spare with resolutions upscaled beyond 1080p for the most processing-intensive content. And with a choice of digital outputs, you have more options when enjoying your digital entertainment.2

Break-through Efficiency
ATI Radeon™ HD 3800 Series graphics processors have break-through efficiency, with up to twice the processing performance per watt than previous generations of AMD GPUs. And thanks to the smaller, 55nm process technology that runs cool and quiet, you can pack more performance in your system at an extraordinary value.

ATI Radeon HD 3800 Series – Key Features
  • Ultimate Microsoft® DirectX® 10.1 Performance – You’ll be blown away by life-like graphics from the latest DirectX® 10.1 games, with stunning 3D graphics and shading effects.
  • Over 1 teraFLOPS of Compute Power – up to 640 stream processors (320 x 2) on a single card deliver the raw horsepower to attack the most demanding graphics applications
  • ATI CrossFireX™ multi-GPU – Upgrade to even greater 3D performance quickly and easily thanks to plug-and-play ATI CrossFireX technology with up to quad-GPU support.
  • PCI Express® 2.0 – Get ready for the most demanding graphics applications with PCI Express 2.0 support, which allows up to twice the throughput of current AMD PCI Express cards.1
  • Unified Video Decoder – View and manipulate the latest Blu-ray and HD DVD content with a dedicated hardware video decoder that leaves your CPU free to perform other tasks.
  • Ultimate Image Quality – Performance that rivals high-end HD-DVD and Blu-ray players on displays with resolutions that exceed 1080p – up to 2560x1600.2
  • Integrated Digital Outputs – Enjoy your digital content the way you want to, with built-in HDMI that includes 5.1 surround audio for big screen entertainment.
  • More Processing Performance per Watt – Get up to twice the Gigaflops per watt of previous generations of high-end AMD GPUs.
  • ATI PowerPlay™ Technology – power saving features that reduce power consumption at idle or during low-usage
  • Runs Cool and Quiet – With a smaller chip designed to use less power, your system can take advantage of high-end Windows Vista® features while running more efficiently and quieter than ever.


ATI Radeon™ HD 3800 Series - GPU Specifications
  • 666 million transistors on 55nm fabrication process
  • PCI Express 2.0 x16 bus interface5
  • 256-bit GDDR3/GDDR4 memory interface
  • Ring Bus Memory Controller
    • Fully distributed design with 512-bit internal ring bus for memory reads and writes
  • 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
    • 320 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 80 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
    • Physics processing support
  • 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
    • Temporal anti-aliasing
    • Gamma correct
    • Super AA (ATI CrossFire™ 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
    • Bicubic 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 Platform
    • Dedicated unified video decoder (UVD) for H.264/AVC and VC-1 video formats
      • High definition (HD) playback of both Blu-ray and HD DVD formats
    • Hardware MPEG-1, MPEG-2, and DivX video decode acceleration
      • Motion compensation and IDCT
    • ATI Avivo Video Post Processor
      • 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
      • Inverse telecine (2:2 and 3:2 pull-down correction)
      • Bad edit correction
    • 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 support4
      • Supports 24- and 30-bit displays at all resolutions up to 2560x16002
    • HDMI output support
      • Supports all display resolutions up to 1920x10802
      • Integrated HD audio controller with multi-channel (5.1) AC3 support, enabling a plug-and-play cable-less audio solution
    • Integrated AMD Xilleon™ HDTV encoder
      • Provides high quality analog TV output (component/S-video/composite)
      • Supports SDTV and HDTV resolutions
      • Underscan and overscan compensation
    • MPEG-2, MPEG-4, DivX, WMV9, VC-1, and H.264/AVC encoding and transcoding
    • Seamless integration of pixel shaders with video in real time
    • VGA mode support on all display outputs
  • ATI PowerPlay™
    • 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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Comments at Blog (5) . 01 Nov 2008 . 10:37

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