Specifications

RADEON X800 Technology Specifications

• 160 million transistors on 0.13 micron low-k fabrication process
• Up to sixteen extreme parallel pixel pipelines
• Six programmable vertex shader pipelines
• 256-bit quad-channel GDDR3 memory interface
• AGP 8X support or PCI Express ™ support

SMARTSHADER™ HD

• Support for Microsoft® DirectX® 9.0 programmable vertex and pixel shaders in hardware
• DirectX® 9.0 Vertex Shaders
  • Vertex programs up to 65,280 instructions with flow control
  • Single cycle trigonometric operations (SIN & COS)
• DirectX® 9.0 Extended Pixel Shaders
  • Up to 1,536 instructions and 16textures per rendering pass
  • 2nd generation F-buffer technology accelerates multi-pass pixel shader programs with unlimited instructions
  • 32 temporary and constant registers
  • Facing register for two-sided lighting
  • 128-bit, 64-bit & 32-bit per pixel floating point color formats
  • Multiple Render Target (MRT) support
• Complete feature set also supported in OpenGL® via extensions

SMOOTHVISION™ HD

• 2x/4x/6x Anti-Aliasing modes
  • Sparse multi-sample algorithm with gamma correction, programmable sample patterns, and centroid sampling
  • Lossless Color Compression (up to6:1)at all resolutions, including widescreen HDTV resolutions
  • Temporal Anti-Aliasing
• 2x/4x/8x/16x Anisotropic Filtering modes
  • Up to 128-tap texture filtering
  • Adaptive algorithm with bilinear (performance) and trilinear (quality) options

3Dc™

• High quality 4:1 Normal Map Compression
• Works with any two-channel data format

HYPER Z™ HD

• 3-level Hierarchical Z-Buffer with Early Z Test
• Lossless Z-Buffer Compression (up to 48:1)
• Fast Z-Buffer Clear
• Z Cache optimized for real-time shadow rendering
• Optimized for performance at high display resolutions, including widescreen HDTV resolutions

VIDEOSHADER™ HD

• Seamless integration of pixel shaders with video in real time
• FULLSTREAM™ video de-blocking technology for Real, DivX, and WMV9 formats
• VIDEOSOAP™ noise removal filtering for captured video
• All-format DTV/HDTV decoding
• Adaptive Per-Pixel De-Interlacing and Frame Rate Conversion (temporal filtering)

DISPLAY FEATURES

• Dual integrated display controllers
• Dual integrated 10 bit per channel 400 MHz DACs
• Integrated 165 MHz TMDS transmitter (DVI 1.0 / HDMI compliant and HDCP ready)
• Integrated TV Output support up to 1024x768 resolution
• YPrPb component output for direct drive of HDTV displays†
• Single and dual link external TMDS transmitter support for high resolution and/or multi-monitor DVI configurations
• Compatible with ATI’s THEATER™ video decode and capture devices for VIVO (Video Input / Video Output) configurations on certain X800 graphic cards

The R420 core did not sport significant upgrades in features, compare to the R3xx series. The key improvement for the R420 core was the new 3Dc compression, and slight improvements in the shaders.