Radeon™ X1800 Graphics Technology - GPU Specifications
- Features
- 321 million transistors on 90nm fabrication process
- Ultra-threaded architecture with fast dynamic branching
- Sixteen pixel shader processors
- Eight vertex shader processors
- 256-bit 8-channel GDDR3/GDDR4 memory interface
- Native PCI Express x16 bus interface
- Dynamic Voltage Control
- Ring Bus Memory Controller
-
- 512-bit internal ring bus for memory reads
- Programmable intelligent arbitration logic
- 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
- Z/stencil cache optimized for real-time shadow rendering
- 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
- 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
- Multiple Render Target (MRT) support
- Render to vertex buffer support
- 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
* AMD’s ATI Radeon™ X and Radeon™ 9550
series of GPUs are capable of processing HDCP signals ("HDCP ready"),
however not all ATI Radeon graphics cards are HDCP ready. Please check
the applicable ATI Radeon graphics card specification to determine
if a particular ATI Radeon graphics card is HDCP ready. Some third
parties manufacture graphics cards containing ATI Radeon GPUs -- you
can inquire of them which models, if any, are HDCP ready. In addition,
playing HDCP content requires additional HDCP ready components, including
but not limited to an HDCP ready monitor, disc drive, multimedia application
and computer operating system.
- CrossFire™
-
- Multi-GPU technology
- Four modes of operation:
- Alternate Frame Rendering (maximum performance)
- Supertiling (optimal load-balancing)
- Scissor (compatibility)
- Super AA 8x/10x/12x/14x (maximum image quality)
Windows® Logo Program compliant
ATI Catalyst™ Software Suite
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