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ATI Mobility Radeon™ HD 4850 / HD 4870 Graphics – Specifications
ATI Mobility Radeon™ HD 4850 / HD 4870 Product Features
- 956 million transistors on 55nm fabrication process
- Unified Superscalar Shader Architecture
- Microsoft® DirectX® 10.1 support
- OpenGL 2.0 support
- 256-bit GDDR5 and GDDR3 memory interface (depending on model) – PCI Express 2.0 x16 bus interface
- 800 stream processing units
- 24x custom filter anti-aliasing (CFAA) and high performance anisotropic filtering
- Dual mode ATI CrossFireX™ multi-GPU support for highly scalable performance
- Dynamic geometry acceleration
- Game physics processing capability
- ATI Avivo™ HD video and display technology1
- Unified Video Decoder 2 (UVD 2) for Blu-ray™ and HD Video
- DVD Upscaling
- Dynamic Contrast
- Built-in HDMI with 7.1 surround sound support
- DisplayPort™
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
ATI Avivo™ HD Video and Display Platform6
- 2nd Unified Video Decoder (UVD 2)
- High definition (HD) playback of Blu-ray and HD DVD video
- Dual stream (HD+SD) playback support (or Picture-in-Picture)
- DirectX Video Acceleration 1.0 & 2.0 support
- Enabling hardware decode acceleration of H.264, VC-1 and MPEG-2
- Hardware MPEG-1 and DivX video decode acceleration
- Motion compensation and IDCT
- ATI Avivo Video Post Processor6
- Enhanced DVD up-scaling (SD to HD)
- 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
- 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
- One integrated LVDS display output
- Integrated LVDS display outputs for embedded panels
- Supports 18- and 24-bit digital displays at all resolutions up to 1920x1200 (Dual-Channel LVDS)
- 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
- One integrated 400 MHz 30-bit RAMDACs
- Supporting 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
- Supports 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-HD, enabling a plug-and-play audio solution over HDMI5
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 Technology7
- Scale up rendering performance and image quality with two GPUs
- Integrated compositing engine
- High performance dual channel bridge interconnect1
9800GTX.
GPU Engine Specs:
Processor Cores128Graphics Clock (MHz)675 MHzProcessor Clock (MHz)1688 MHzTexture Fill Rate (billion/sec)43.2
Memory Specs:
Memory Clock (MHz)1100 MHzStandard Memory Config512 MB Memory Interface Width256-bit Memory Bandwidth (GB/sec)70.4
Feature Support:
NVIDIA SLI®-ready* 2-way/3-Way GeForce 3D Vision Ready
NVIDIA PureVideo® Technology* HD NVIDIA PhysX™-ready
* NVIDIA CUDA™ Technology
HybridPower™ Technology*
Microsoft DirectX10 OpenGL2.1 Bus SupportPCI-E 2.0 Certified for Windows Vista
Display Support:
Maximum Digital Resolution2560x1600 Maximum VGA Resolution2048x1536 Standard Display ConnectorsDual Link DVI
HDTV Multi Monitor
HDCP*
HDMI* Via adapter Audio Input for HDMISPDIF
Standard Graphics Card Dimensions:
Height4.376 inches Length10.5 inches WidthDual-slot
Thermal and Power Specs:
Maximum GPU Temperature (in C)105C C Maximum Graphics Card Power (W)140W W Minimum System Power Requirement (W)450W W Supplementary Power Connectors