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 how you work and play.

Advance to the Next Generation of HD Gaming
Advance to the next generation of gaming with incredible performance, life-like graphics and support for the latest Microsoft® DirectX® 10.1. With PCI Express® 2.0 support, you’re ready for games that will demand faster throughput. And thanks to plug-and-play ATI CrossFireX™ upgradeability, it is easy to turbo-charge your 3D performance.
Download the ATI Radeon™ HD 3800 Series and Microsoft® DirectX® 10.1 whitepaper


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.
Download the ATI Avivo™ HD - Video Technology Brief
Learn more about ATI Avivo™ HD

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 a smaller format that runs cooler, you can pack more performance in your system at an extraordinary value.

ATI Radeon HD 3800 Series – Key Features

* 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.
* Incredible 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.
* 320 Stream Processors – More than enough horsepower to support 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.
* 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.
* 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 interface
* 256-bit GDDR3/GDDR4 memory interface
* Ring Bus Memory Controller
o Fully distributed design with 512-bit internal ring bus for memory reads and writes
* Microsoft® DirectX® 10.1 support
o Shader Model 4.1
o 32-bit floating point texture filtering
o Indexed cube map arrays
o Independent blend modes per render target
o Pixel coverage sample masking
o Read/write multi-sample surfaces with shaders
o Gather4 texture fetching
* Unified Superscalar Shader Architecture
o 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
o 128-bit floating point precision for all operations
o Command processor for reduced CPU overhead
o Shader instruction and constant caches
o Up to 80 texture fetches per clock cycle
o Up to 128 textures per pixel
o Fully associative multi-level texture cache design
o DXTC and 3Dc+ texture compression
o High resolution texture support (up to 8192 x 8192)
o Fully associative texture Z/stencil cache designs
o Double-sided hierarchical Z/stencil buffer
o Early Z test, Re-Z, Z Range optimization, and Fast Z Clear
o Lossless Z & stencil compression (up to 128:1)
o Lossless color compression (up to 8:1)
o 8 render targets (MRTs) with anti-aliasing support
o Physics processing support
* Dynamic Geometry Acceleration
o High performance vertex cache
o Programmable tessellation unit
o Accelerated geometry shader path for geometry amplification
o Memory read/write cache for improved stream output performance
* Anti-aliasing features
o Multi-sample anti-aliasing (2, 4, or 8 samples per pixel)
o Up to 24x Custom Filter Anti-Aliasing (CFAA) for improved quality
o Adaptive super-sampling and multi-sampling
o Temporal anti-aliasing
o Gamma correct
o Super AA (ATI CrossFire™ configurations only)
o All anti-aliasing features compatible with HDR rendering
* Texture filtering features
o 2x/4x/8x/16x high quality adaptive anisotropic filtering modes (up to 128 taps per pixel)
o 128-bit floating point HDR texture filtering
o Bicubic filtering
o sRGB filtering (gamma/degamma)
o Percentage Closer Filtering (PCF)
o Depth & stencil texture (DST) format support
o Shared exponent HDR (RGBE 9:9:9:5) texture format support
* OpenGL 2.0 support
* ATI Avivo™ HD Video and Display Platform
o 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
o Hardware MPEG-1, MPEG-2, and DivX video decode acceleration
+ Motion compensation and IDCT
o 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
o 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
o 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
o Two integrated 400 MHz 30-bit RAMDACs
+ Each supports analog displays connected by VGA at all resolutions up to 2048x15362
o DisplayPort output support4
+ Supports 24- and 30-bit displays at all resolutions up to 2560x16002
o 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
o Integrated AMD Xilleon™ HDTV encoder
+ Provides high quality analog TV output (component/S-video/composite)
+ Supports SDTV and HDTV resolutions
+ Underscan and overscan compensation
o MPEG-2, MPEG-4, DivX, WMV9, VC-1, and H.264/AVC encoding and transcoding
o Seamless integration of pixel shaders with video in real time
o VGA mode support on all display outputs
* ATI PowerPlay™
o Advanced power management technology for optimal performance and power savings
o 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
o Central thermal management – on-chip sensor monitors GPU temperature and triggers thermal actions as required
* ATI CrossFireX™ Multi-GPU Technology
o Scale up rendering performance and image quality with two, three, or four GPUs
o Integrated compositing engine
o High performance dual channel bridge interconnect