SAPPHIRE HD3870 X2

666 million transistors on 55nm fabrication process
PCI Express x16 GPU bus interface
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)¹
  - Each includes a dual-link HDCP encoder with on-chip key storage for high resolution playback of protected content²
  - Two integrated 400 MHz 30-bit RAMDACs
- - Each supports analog displays connected by VGA at all resolutions up to 2048x1536¹
- HDMI output support
  - Supports all display resolutions up to 1920x1080¹
  - 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 bridge interconnect

Some custom resolutions require user configuration
HDCP support for playback of protected content requires connection to a HDCP capable display
Dual channel interconnect is not required for ATI CrossFire, and may not be included in all product configurations

System Requirements

PCI Express® based PC is required with one X16 lane graphics slot available on the motherboard
550 Watt or greater power supply with two 2x3-pin PCIe® power connectors required (750 Watt and four 6-pin connectors for dual ATI CrossFireX™) .
For enhanced performance with ATI Overdrive™, a power supply with one 2x3-pin and one 2x4-pin PCIe® power connector is required
Certified power supplies are strongly recommended. Refer to http://ati.amd.com/CertifiedPSU for a list of Certified products
Certified system cases with good airflow and cooling are recommended. Refer to http://ati.amd.com/certifiedcases for a list of Certified products
1GB of system memory
Installation software requires CD-ROM drive
DVD playback requires DVD drive
Blu-ray™ / HD DVD playback requires Blu-ray / HD DVD drive
For a complete ATI CrossFireX™ system, a second ATI Radeon™ HD 3870 X2 graphics card, an ATI CrossFireX Ready motherboard and one ATI CrossFireX Bridge Interconnect cable per board are required

Disclaimer:
Product specifications subject to change without notice. Product bundle varies by countries, check local dealers for details.