ATI Radeon X1900 Graphics Card
ATI has thrown the gauntlet into nVidia's camp with the new Radeon X1900 series of high-end graphics cards. There are four models in the X1900 series. The X1900 XTX is the undisputed champ. It's the fastest consumer-line graphics power your money can buy today. The other models include the X1900 XT, The X1900 CrossFire, and the X1900 All-in-Wonder. A brief summary of the cards follows:
X1900 XTX
- 650 MHz core clock
- 1.55 GHz memory clock
- 512 MB GDDR3
- MSRP $649
- Available today
Radeon X1900 XT
- 625 MHz core clock
- 1.45 GHz memory clock
- 512 MB GDDR3
- MSRP $549
- Available today
Radeon X1900 CrossFire
- 625 MHz core clock
- 1.45 GHz memory clock
- 512 MB GDDR3
- MSRP $599
- Available today
X1900 All-in-Wonder
- 500 MHz core clock
- 960 MHz memory clock
- MSRP $499
- Available today
Read the complete specifications for the X1900 in the extended entry.
Product website: ATI Radeon X1900
Radeon® X1900 Graphics Technology - Specifications
Features
- 384 million transistors on 90nm fabrication process
- 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
- 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
- 32-bit integer HDR (10:10:10:2) format supported throughout the pipeline
- 2x/4x/6x Anti-Aliasing modes
- 2x/4x/8x/16x Anisotropic Filtering modes
- High resolution texture support (up to 4k x 4k)
Avivo™ Video and Display Engine
- High performance programmable video processor
- Accelerated MPEG-2, MPEG-4, DivX, WMV9, VC-1, and H.264 decoding (including DVD/HD-DVD/Blu-ray playback), encoding & 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 / HDMI compliant 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
- Compatible with ATI TV/Video encoder products, including Theater 550
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)
Power supply notes
- Connection to the system power supply is required:
- 450-Watt power supply or greater, 30 Amps on 12 volt rail recommended (assumes fully loaded system)
- PCI Express compliant power supply (recommended). Connect directly to the power supply with a 6 pin PCI Express power connector
- For CrossFire: 550 watt power supply or greater, 38 Amps on 12 volt rail
