ATI Mobility Radeon™ HD 2400 XT Product Features

• 180 million transistors using 65nm fabrication process
• 40 stream processor units
• 40~48 GigaFLOPS
• Superscalar unified shader architecture
• 64-bit single-channel DDR1/DDR2/GDDR3 memory interface
• Native PCI Express x16 bus interface
• ATI PowerPlay 7.0 power management technology
• ATI Avivo HD Video and Display architecture

Ring Bus Memory Controller

•  Programmable arbitration logic maximizes memory efficiency, software upgradeable.
• Fully associative texture, color, and Z cache design.
• New hierarchical Z & Stencil buffers with Early Z Test.
• New lossless Z-buffer compression for both Z and Stencil.
• Fast Z-Buffer Clear.
• Z cache optimized for real-time shadow rendering.
• Z and color compression resources virtualized to a 32-bit addressing space, for support of multiple render targets and textures simultaneously.

Superscalar Unified Shader Architecture

Fully DirectX 10.0 compliant, including full speed 32-bit floating point per component operations

• Shader Model 4.0 geometry and pixel support in a unified shader architecture:
• Full speed 32-bit floating point processing per component.
• High dynamic range rendering with floating point blending, texture filtering and anti-aliasing support.
• High performance dynamic branching and flow control.
• Nearly unlimited shader instruction store, using an advance caching system.
• Advanced shader design, with ultra-threading sequencer for high efficiency operations.
• Advanced, high performance branching support, including static and dynamic branching.
• 32-bit floating point components for high dynamic range computations.
• Full anti-aliasing on render surfaces up to and including 128-bit floating point formats.
• Support for OpenGL ® 2.0

Advanced Image Quality Features

• 64-bit floating point HDR supported throughout the pipeline
  • Includes support for blending and multi-sample anti-aliasing
• 32-bit integer HDR (10:10:10:2) format supported throughout the pipeline
  • Includes support for blending and multi-sample anti-aliasing
• Anti-Aliasing Filtering:
  • 2x/4x/8x modes.
  • Sparse multi-sample algorithm with gamma correction, programmable sample patterns, and centroid sampling.
  • Temporal anti-aliasing.
  • Adaptive anti-aliasing mode.
  • Lossless color compression (up to 8:1) at all resolutions, up to and including widescreen HDTV.
• Anisotropic Filtering:
  • 2x/4x/8x/16x modes
  • Up to 128-tap texture filtering.
  • Adaptive algorithm with performance (bi-linear) and quality (tri-linear) options.
  • Improved quality mode due to improved subpixel precision, higher precision LOD computations, and rotationally invariant LOD computations.
• Advanced Texture Compression (3Dc+™ ):
  • High quality 4:1 compression for normal maps and luminance maps.
  • Works with any single-channel or two-channel data format.

Avivo™ HD Video and Display Engine

• Motion Video Acceleration for HD DVD/Blu-ray technology
  • Dedicated UVD (Unified Video Decoder) hardware for H.264 and VC-1 decode:
  • H.264 implementation is based on the ISO/IEC 14496-10 spec.
  • VC-1 implementation is based on the SMPTE 421M spec.
• Video scaling and fully programmable YCrCb to RGB color space conversion for full-screen / full-speed video playback and fully adjustable color controls.
• MPEG1/2/4 decode and encode acceleration:
  •  Hardware motion compensation
  • iDCT/DCT and color space conversion
  • HW DXVA parser support for iDCT
  •  MPEG-4 Simple Profile support
• All-format DTV/HDTV decoding.
• Supports top quality DVD and time-shifted SDTV/HDTV television playback with the lowest CPU usage.
• Adaptive de-interlacing filter
• Advanced Video Processor (AVP)
  • A memory to memory advanced video processor. Processing includes color space conversion, chroma subsampling format conversion, horizontal and vertical scaling, directional deinterlacing, and gamma correction, all in one pass. AVP offloads format conversion, deinterlacing and scaling tasks from the 3D engine, allowing for reduced memory bandwidth usage, ALU load, and power consumption.

Power Management Features

• Single chip solution in 65nm, 0.9V-1.2V CMOS technology.
• Full ACPI 1.0b, OnNow, and IAPC (Instantly Available PC) power management.
• Static and dynamic power management support (APM as well as ACPI) with full VESA DPM and Energy Star support.
• Full PowerPlay™ 7.0 support.
• The chip power management support logic supports four device power states - On,Standby, Suspend and Off - defined for the OnNow architecture. Each power state can be achieved by software control bits.
• Clocks to every major functional block are controlled by a unique dynamic clock switching technique which is completely transparent to the software. By turning off the clock to the block that is idle or not used at that point, the power consumption is significantly reduced during normal operation.