Sapphire Radeon X1800 XT Graphics Card

Sapphire Updated: 2009-01-07 RSS
Sapphire Radeon X1800 XT Graphics Card

Ripped from the creative minds of the game developers, your world is transformed into a realm laden with menacing creatures and numerous physical trials brought to life by the next evolutionary step in graphics with the Sapphire RADEON X1800 XT. Challenge the minds' perception of reality and allow the power of RADEON X1800 XT to pluck you from your chair, transplanting you into a place devoid of common concerns and engaged in a ruthless fight for survival pitted against threatening figures rendered in true to life form with High Definition clarity. Utilizing the next generation Ultra-threaded Shader Model 3.0 and SuperAA breakthroughs, image quality has been driven to new levels of realism with the Sapphire X1800 series of CrossFire compatible graphics cards. Forget about the days of when you had to trade image quality for a higher framerate as the onboard 512MB of GDDR3 memory and 256-bit memory interface remove bottlenecks affording you the power to select all of enhanced image rendering options. Fuel your fantasy with the muscle of the Sapphire RADEON X1800 series and step into a world of vibrant textures that erupt on screen in real time as you make your way to your own reality!

512MB / 256MB of GDDR3
Shader Model 3.0
HDTV Compatible (YPbPr)
Hydravision 3
RADEON X1800 XT - 625MHz Core
512MB of GDDR3 - 1500 MHz Memory
DirectX® 9.0c Support and OpenGL Support


* 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
o High quality 4:1 compression for normal maps and two-channel data formats
o 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
o Includes support for blending and multi-sample anti-aliasing
* 32-bit integer HDR (10:10:10:2) format supported throughout the pipeline
o Includes support for blending and multi-sample anti-aliasing
* 2x/4x/6x Anti-Aliasing modes
o Multi-sample algorithm with gamma correction, programmable sparse sample patterns, and centroid sampling
o New Adaptive Anti-Aliasing feature with Performance and Quality modes
o Temporal Anti-Aliasing mode
o Lossless Color Compression (up to 6:1) at all resolutions, including widescreen HDTV resolutions
* 2x/4x/8x/16x Anisotropic Filtering modes
o Up to 128-tap texture filtering
o 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
o Accelerated MPEG-2, MPEG-4, DivX, WMV9, VC-1, and H.264 decoding and transcoding
o DXVA support
o De-blocking and noise reduction filtering
o Motion compensation, IDCT, DCT and color space conversion
o Vector adaptive per-pixel de-interlacing
o 3:2 pulldown (frame rate conversion)
* Seamless integration of pixel shaders with video in real time
* HDR tone mapping acceleration
o Maps any input format to 10 bit per channel output
* Flexible display support
o Dual integrated dual-link DVI transmitters
+ DVI 1.0 compliant / HDMI interoperable and HDCP ready*
o Dual integrated 10 bit per channel 400 MHz DACs
o 16 bit per channel floating point HDR and 10 bit per channel DVI output
o Programmable piecewise linear gamma correction, color correction, and color space conversion (10 bits per color)
o Complete, independent color controls and video overlays for each display
o High quality pre- and post-scaling engines, with underscan support for all outputs
o Content-adaptive de-flicker filtering for interlaced displays
o Xilleon TV encoder for high quality analog output
o YPrPb component output for direct drive of HDTV displays
o Spatial/temporal dithering enables 10-bit color quality on 8-bit and 6-bit displays
o Fast, glitch-free mode switching
o VGA mode support on all outputs
o Drive two displays simultaneously with independent resolutions and refresh rates
* Compatible with ATI TV/Video encoder products, including Theater 550


* Multi-GPU technology
* Four modes of operation:
o Alternate Frame Rendering (maximum performance)
o Supertiling (optimal load-balancing)
o Scissor (compatibility)
o Super AA 8x/10x/12x/14x (maximum image quality)