Palit Radeon HD 4850 Sonic 512MB - Features and Specifications

Article Index
Palit Radeon HD 4850 Sonic 512MB
Features and Specifications
Closer Look and HIS Comparison
Test System and Benchmarking
More Benchmarks and Final Thoughts

ATI Radeon HD 4800 Series - Key Features:

We kick the features and specifications section off with some information from AMD/ATI regarding the entire 4800 Series.

  • TeraScale Graphics Engine - The new TeraScale graphics engine features over one teraFLOPS, nearly one billion transistors and 800 stream processors so you can enjoy the high resolutions and fast frame rates previously only available with dual-card systems.
  • Advanced Memory - GDDR5 memory provides twice the bandwidth per pin of GDDR3.
  • Enhanced Anti-Aliasing & Anisotropic Filtering - High performance anisotropic filtering and 24x custom filter anti-aliasing (CFAA) smooth jagged edges and create true-to-life graphics, for everything from grass to facial features.
  • DirectX® 10.1 - Play today while preparing for tomorrow with state-of-the-art DirectX 10.1 graphics capabilities.
  • ATI CrossFireX™ Technology - ATI CrossFireX™ technology with up to quad GPU support offers superior scalability so your system is ready to level up when you are.
  • PCI Express 2.0 - Support for PCI Express 2.0 will prepare you for bandwidth-hungry games and 3D applications.
  • Unified Video Decoder 2 (UVD 2) - UVD 2 frees up your CPU for other tasks so you get The Ultimate Visual Experience™ for even the most processing-intensive content, including VC-1, H.264 and now MPEG-2. Also, take full advantage of Blu-ray functionality with dual-stream, picture in picture (PIP) capabilities.
  • Accelerated Video Transcoding (AVT) - AVT allows you to convert videos to H.264 and MPEG-2 formats up to 19x faster than when using a just CPU.3 Full 1080p files can be converted to H.264 and MPEG-2 up to 1.8x faster than real-time.
  • Upscale Beyond 1080p - Watch the hottest Blu-ray movies or other HD content at full 1080p display resolution and beyond.
  • Enhanced DVD Upscaling - Watch standard DVD movies in near high-definition quality with DVD upscaling. The GPU uses post processing algorithms to enhance standard and low resolution videos and movies on your HD display.
  • Dynamic Contrast - Dynamic Contrast automatically adjusts the contrast and brightness during scenes to consistently deliver a crisp, vibrant picture.
  • HDMI - Enjoy the latest audio technologies using HDMI with 7.1 digital surround sound support. Also, xvYCC support allows the user to enjoy a wider range of color when connected to a capable HDTV.
  • Dynamic Power Management - ATI Radeon HD 4800 Series graphics cards deliver high performance when needed and conserve power when the demand on the graphics processor is low.
  • More Performance Per Watt - ATI Radeon HD 4800 series delivers up to 2x the performance per watt of AMD’s previous generation GPUs. 


ATI Radeon HD 4800 Series - GPU Specifications:

  • 956 million transistors on 55nm fabrication process
  • PCI Express 2.0 x16 bus interface
  • 256-bit GDDR3/4/5 memory interface
  • 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
    • Re-Z, and Z Range optimization
    • 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
  • OpenGL 2.1 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 DivX and MPEG-1 video decode acceleration
    • Accelerated video transcoding & encoding for H.264 and MPEG-2 formats
    • 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
      • 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)
      • Each includes a dual-link HDCP encoder with on-chip key storage for high resolution playback of protected content
    • Two integrated 400 MHz 30-bit RAMDACs
      • Each supports analog displays connected by VGA at all resolutions up to 2048x1536
    • DisplayPort output support
      • 24- and 30-bit displays at all resolutions up to 2560x1600
    • HDMI output support
      • All display resolutions up to 1920x1080
      • 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™ 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 shaders with video in real time
    • VGA mode support on all display outputs
  • 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

 

Palit Core Palit Radeon HD 4850 Specifications:

Radeon™ HD 4850 Sonic comes with Palit's innovative cooling system with two-ball bearing PWM fan, heat-pipes, and superior copper base to ensure high performance, trustworthy thermal effect. The 3-Phase PWM power circuit on Palit HD 4850 Sonic provides a more sufficient and stable energy distribution system and this power circuit further combines the 8-pin power connector which is able to support up to 150W sufficient power therefore allows a ultimate overclocking potential with stability.

  • Board Specifications
  • Bus interface: PCI Express® 2.0
  • Memory Support: 512MB GDDR3
  • Memory Interface: 256 bit
  • Memory Clock: 2000MHz (1000 x 2)
  • Core Clock: 685MHz
  • RAMDACs: 400 MHz
  • Dual Dual-link DVI outputs support 2560x1600 resolution displays
  • ATI CrossFireX™ Multi-GPU Technology
  • HDMI function via dongle (Optional)


  • GPU Specifications
  • Dynamic geometry acceleration
  • Game physics processing capability
  • ATI PowerPlay™ technology
  • ATI Avivo™ HD video and display technology
  • Full Microsoft® DirectX® 10.1 Shader Model 4.1 support
  • HDCP capable
  • Built for Microsoft® Windows Vista™