ATI Radeon™ HD 4600 Series Feature Summary

ATI Radeon™ HD 4600 Series Feature Summary

1. 514 million transistors on 55nm fabrication process

• PCI Express 2.0 x16 bus interface

• GDDR3/DDR3/DDR2 memory interface (depending on model)

• 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

  • 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 128 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 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 superior 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 2.0 support

• ATI Avivo™ HD Video and Display Platform

• 2nd generation Unified Video Decoder (UVD 2)

  • Enabling hardware decode acceleration of H.264, VC-1 and MPEG-2

  • Dual stream playback (or Picture-in-picture)

• Hardware MPEG-1 and DivX video decode acceleration

  • Motion compensation and IDCT

• ATI Avivo Video Post Processor

  • Enhanced DVD up-conversion 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

  • Inverse telecine (2:2 and 3:2 pull-down correction)

  • Bad edit correction

  • Automatic dynamic contrast adjustment

  • Full score in HQV (SD) and HQV (HD) video quality benchmarks

• 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 DVI display outputs

  • Primary supports 18-, 24-, and 30-bit digital displays at all resolutions up to 1920x1200 (single-link DVI) or 2560x1600 (dual-link DVI)

  • decondary supports 18-, 24-, and 30-bit digital displays at all resolutions up to 1920x1200 (single-link DVI only)

  • 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

  • Supports 24- and 30-bit displays at all resolutions up to 2560x1600

  • Integrated HD audio controller with up to 2 channel 48 KHz stereo or multi-channel (7.1) AC3 enabling a plug-and-play cable-less audio solution

• HDMI output support

  • Supports all display resolutions up to 1920x1080

  • Integrated HD audio controller with up to 2 channel 48 KHz stereo or multi-channel (7.1) AC3 enabling a plug-and-play cable-less audio solution

• 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 GPUs

• Integrated compositing engine

• High performance bridge interconnect