POWERCOLOR RADEON HD 4850 PCS
"Powercolor Radeon HD 4850 PCS uses the RV770 GPU at 625Mhz with 1GB GDDR3 memory running at 1986Mhz. Powercolor Radeon HD 4850 PCS has 256Bit Memory Interface, 800 Shader Processors and DirectX 10.1. Powercolor Radeon HD 4850 PCS faces competition from Powercolor Radeon HD 4770 PCS which has GDDR5 Memory, DirectX 10.1 and 640 Shader Processors. Software used for testing was 3dmark 2006, Crysis 2, Hawk and Metro 2033."
"Powercolor Radeon PCS HD 4850 1GB is part Number AX4850 1GBD3-PH using the Radeon HD 4850 Graphics Engine with 1GB GDDR3 Video Memory. Powercolor Radeon PCS HD 4850 1GB has 625MHz Engine Clock with 1GB GDDR3 Memory Clocked at 950Mhz x2 using a Memory Interface of 256bit. Powercolor Radeon PCS HD 4850 1GB has DirectX Support 10.1 using PCIE 2.0 Bus Standard with DVI, HDMI and VGA Display Connectors. Powercolor Radeon PCS HD 4850 1GB has 956 million transistors on 55nm fabrication process, PCI Express 2.0 x16 bus interface with 256-bit GDDR3. The Powercolor Radeon PCS HD 4850 1GB is a powerful Video Card with 800 Shader Processors for top quality frame rates and excellent performance. As a rough guide Powercolor Radeon PCS HD 4850 1GB has 20% extra Shader Processors compared to AMD Radeon HD 4770 and 60% extra Shader Processors compared to AMD Radeon HD 3870."
Microsoft DirectX 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. Gather texture fetching."
Unified Superscalar Shader Architecture
"800 stream processing units with 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 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."
"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 Platform
"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."
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."
Integrated HD audio controller
"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 over HDMI."
ATI PowerPlay Technology
"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 dual channel bridge interconnect. Dual channel interconnect is not required for CrossFireX, and may not be included in all product configurations."
POWERCOLOR RADEON HD 4850 PCS KEY FEATURES
POWERCOLOR RADEON HD 4850 PCS