Core/Memory

850MHz Core
1GB GDDR3 1800MHz Memory

On-board Function

ATI Radeon HD 3870 GPU x 2
HDTV_Out / Dual DVI-I Connectors
Dual-Link DVI Support
HDMI / HDCP Support
CrossFire Support

RADEON™ HD 3870 Chipset Features and Specifications

• 666 million transistors on 55nm fabrication process
• PCI Express x16 bus interface
• 256-bit GDDR3 memory interface
• OpenGL 2.0 support
• 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
- 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
• CrossFire Multi-GPU Technology
- Scale up rendering performance and image quality with 2 or more GPUs
- Integrated compositing engine
• ATI PowerPlay™
- Advanced power management technology for optimal performance and power savings
- Performance-on-Demand
- Central thermal management - on-chip sensor monitors GPU temperature and triggers thermal actions as required
• ATI Avivo™ HD Video and Display Platform
- Dedicated unified video decoder (UVD) for H.264/AVC and VC-1 video formats
- Hardware MPEG-1, MPEG-2, and DivX video decode acceleration
- ATI Avivo Video Post Processor
- HDMI output support
- Two integrated DisplayPort™ output supports
- Two integrated 400 MHz 30-bit RAMDACs
- Two integrated dual-link DVI display outputs
- Two independent display controllers
- Integrated AMD Xilleon™ HDTV encoder
- 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
• HDCP - High-bandwidth Digital Content Protection
HDCP is a content protection specification to protect digital entertainment content across the DVI/HDMI interface. The HDCP provides a robust, cost-effective and transparent method for transmitting and receiving digital entertainment similar to DVI/HDMI-compliant digital displays. HDCP encrypts the data transmitted between the DVI/HDMI connector on the graphics adapter and the display. To provide this support, both the graphics adapter and the display need to have an HDCP transmitter and receiver respectively.
• PERFORMANCES
• Memory interface: 256-bit x 2
• Engine Clock Speed: 850MHz
• Memory Clock Speed: 1800MHz
• Stream Processing Units: 320 x 2
• Texture Units: 16