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ATI Radeon X800 XT Mac Edition

Graphics Processor
Pixel Shaders
Vertex Shaders
256 MB
Memory Size
Memory Type
256 bit
Bus Width
ATI Radeon X800 XT Mac Edition Image ATI R423 Image
The Radeon X800 XT Mac Edition was a graphics card by ATI, launched in December 2004. Built on the 130 nm process, and based on the R423 graphics processor, the card supports DirectX 9.0c. The R423 graphics processor is an average sized chip with a die area of 289 mm² and 160 million transistors. It features 16 pixel shaders and 6 vertex shaders, 16 texture mapping units and 16 ROPs. Due to the lack of unified shaders you will not be able to run recent games at all (which require unified shader/DX10+ support). ATI has placed 256 MB GDDR3 memory on the card, which are connected using a 256-bit memory interface. The GPU is operating at a frequency of 475 MHz, memory is running at 500 MHz.
We recommend the ATI Radeon X800 XT Mac Edition for gaming with highest details at resolutions up to, and including, 1280x720.
Being a single-slot card, the ATI Radeon X800 XT Mac Edition does not require any additional power connector, its power draw is rated at 54 W maximum. Display outputs include: 2x DVI. Radeon X800 XT Mac Edition is connected to the rest of the system using an AGP Pro 8x interface.

Graphics Processor

GPU Name: R423
Process Size: 130 nm
Transistors: 160 million
Die Size: 289 mm²

Graphics Card

Released: Dec 1st, 2004
Production Status: End-of-life
Bus Interface: AGP Pro 8x

Clock Speeds

GPU Clock: 475 MHz
Memory Clock: 500 MHz
1000 MHz effective


Memory Size: 256 MB
Memory Type: GDDR3
Memory Bus: 256 bit
Bandwidth: 32.00 GB/s

Render Config

Pixel Shaders: 16
Vertex Shaders: 6
TMUs: 16
ROPs: 16
Pixel Rate: 7.600 GPixel/s
Vertex Rate: 712.5 MVertices/s
Texture Rate: 7.600 GTexel/s

Board Design

Slot Width: Single-slot
TDP: 54 W
Outputs: 2x DVI
Power Connectors: None

Graphics Features

DirectX: 9.0c
OpenGL: 2.0
OpenCL: n/a
Shader Model: 3.0


Our review database contains 226 reviews of the Radeon X800 XT Mac Edition.