NCIXUS.com - Buy Powercolor Radeon HD 4870 770MHZ 1GB 3.6GHZ GDDR5 PCI-E 2XDVI-I Video Card

956 million transistors on 55nm fabrication process
PCI Express 2.0 x16 bus interface
256-bit GDDR5
MicrosoftR DirectXR 10.1 support
ShaderModel 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)
8 render targets (MRTs) with anti-aliasing support
Accelerated physics processing
Dynamic Geometry Acceleration
High performance vertex cache
Programmable tessellation unit
Accelerated geometry shaderpath 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^TMconfigurations only)
All anti-aliasing features compatible with HDR renderin
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
OpenGL 2.0 support
ATI Avivo^TM HD Video and Display Platform⁶
Unified Video Decoder 2 (UVD 2) for H.264/AVC, VC-1, and MPEG-2 video formats
High definition (HD) playback of Blu-ray and HD DVD video
Dual stream (HD+SD) playback support
DirectX Video Acceleration 1.0 & 2.0 support
Support for BD-Live certified applications
Hardware DivXand MPEG-1 video decode acceleration
Accelerated video transcoding& encoding for H.264 and MPEG-2 formats
AIT AvivoVideo Post Processor⁶
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
Enhanced DVD upscaling (SD to HD)
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
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
HDMI output support
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- HD⁴, enabling a plug-and-play audio solution over HDMI
Integrated AMD Xilleon^TM HDTV encoder
Provides high quality analog TV output (component/S- video/composite)
Supports SDTV and HDTV resolutions
Underscan and overscan compensation
Seamless integration of pixel shaderswith video in real time
VGA mode support on all display outputs
ATI PowerPlay^TM 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^TM 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
Dual channel interconnect is not required for CrossFireX, and may not be included in all product configurations.
Some custom resolutions require user configuration.
Playing HDCP content requires additional HDCP ready components, including but not limited to an HDCP ready monitor, Blu-ray or HD DVD disc drive, multimedia application and computer operating system.
Subject to digital rights management limitations; maximum supported audio stream bandwidth is 6.144 Mbps.
ATI PowerPlay ^TM technology consists of numerous power saving features. Not all features may be available in all ATI Radeon HD 4800 Series graphics cards.
ATI Avivo^TM HD is a technology platform that includes a broad set of capabilities offered by certain ATI Radeon^TM HD GPUs. Not all products have all features and full enablement of some ATI Avivo^TM HD capabilities may require complementary products.