Radeon® X1900 Graphics Technology - GPU Specifications
Features
384 million transistors on 90nm
fabrication process
Up to 48 pixel shader processors
8 vertex shader processors
256-bit 8-channel GDDR3
memory interface
Native PCI Express x16 bus interface
Ring Bus Memory Controller
Up to 512-bit internal ring bus for memory reads
Fully associative texture, color, and Z/stencil cache designs
Hierarchical Z-buffer with Early Z test
Lossless Z Compression (up to 48:1)
Fast Z-Buffer Clear
Optimized for performance at high display resolutions, including widescreen HDTV resolutions
Ultra-Threaded Shader Engine
Support for Microsoft® DirectX® 9.0 Shader Model 3.0 programmable vertex and pixel shaders in hardware
Full speed 128-bit floating point processing for all shader operations
Up to 512 simultaneous pixel threads
Dedicated branch execution units for high performance dynamic branching and flow control
Dedicated texture address units for improved efficiency
3Dc+ texture compression o High quality 4:1 compression for normal maps and two-channel data formats
High quality 2:1 compression for luminance maps and single-channel data formats
Complete feature set also supported in OpenGL® 2.0
Advanced Image Quality Features
64-bit floating point HDR rendering 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
2x/4x/6x Anti-Aliasing modes
Multi-sample algorithm with gamma correction, programmable sparse sample patterns, and centroid sampling
New Adaptive Anti-Aliasing feature with Performance and Quality modes
Temporal Anti-Aliasing mode
Lossless Color Compression (up to 6:1) at all resolutions, including widescreen HDTV resolutions
2x/4x/8x/16x Anisotropic Filtering modes
Up to 128-tap texture filtering
Adaptive algorithm with Performance and Quality options
High resolution texture support (up to 4k x 4k)
Avivo™ Video and Display Platform
High performance programmable video processor
Accelerated MPEG-2, MPEG-4, DivX, WMV9, VC-1, and H.264 decoding and transcoding
DXVA support
De-blocking and noise reduction filtering
Motion compensation, IDCT, DCT and color space conversion
Vector adaptive per-pixel de-interlacing
3:2 pulldown (frame rate conversion)
Seamless integration of pixel shaders with video in real time
HDR tone mapping acceleration
Maps any input format to 10 bit per channel output
Flexible display support
Dual integrated dual-link DVI transmitters
DVI 1.0 compliant / HDMI interoperable and HDCP ready*
Dual integrated 10 bit per channel 400 MHz DACs
16 bit per channel floating point HDR and 10 bit per channel DVI output
Programmable piecewise linear gamma correction, color correction, and color space conversion (10 bits per color)
Complete, independent color controls and video overlays for each display
High quality pre- and post-scaling engines, with underscan support for all outputs
Content-adaptive de-flicker filtering for interlaced displays
Xilleon™ TV encoder for high quality analog output
YPrPb component output for direct drive of HDTV displays
Spatial/temporal dithering enables 10-bit color quality on 8-bit and 6-bit displays
Fast, glitch-free mode switching
VGA mode support on all outputs
Drive two displays simultaneously with independent resolutions and refresh rates
Compatible with ATI TV/Video encoder products, including Theater 550
