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ATI Radeon X850 XT Platinum

Graphics Processor
Pixel Shaders
Vertex Shaders
256 MB
Memory Size
Memory Type
256 bit
Bus Width
ATI Radeon X850 XT Platinum Image ATI R480 Image
The Radeon X850 XT Platinum was a graphics card by ATI, launched in December 2004. Built on the 130 nm process, and based on the R480 graphics processor, the card supports DirectX 9.0b. The R480 graphics processor is an average sized chip with a die area of 297 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 540 MHz, memory is running at 590 MHz.
We recommend the ATI Radeon X850 XT Platinum for gaming with highest details at resolutions up to, and including, 1280x720.
Being a dual-slot card, the ATI Radeon X850 XT Platinum draws power from 1x 6-pin power connectors, with power draw rated at 67 W maximum. Display outputs include: 1x DVI, 1x VGA, 1x S-Video. Radeon X850 XT Platinum is connected to the rest of the system using a PCIe 1.0 x16 interface.

Graphics Processor

GPU Name: R480
Process Size: 130 nm
Transistors: 160 million
Die Size: 297 mm²

Graphics Card

Released: Dec 21st, 2004
Production Status: End-of-life
Bus Interface: PCIe 1.0 x16

Clock Speeds

GPU Clock: 540 MHz
Memory Clock: 590 MHz
1180 MHz effective


Memory Size: 256 MB
Memory Type: GDDR3
Memory Bus: 256 bit
Bandwidth: 37.76 GB/s

Render Config

Pixel Shaders: 16
Vertex Shaders: 6
TMUs: 16
ROPs: 16
Pixel Rate: 8.640 GPixel/s
Vertex Rate: 810.0 MVertices/s
Texture Rate: 8.640 GTexel/s

Board Design

Slot Width: Dual-slot
TDP: 67 W
Outputs: 1x DVI
1x VGA
1x S-Video
Power Connectors: 1x 6-pin

Graphics Features

DirectX: 9.0b
OpenGL: 2.0
OpenCL: n/a
Pixel Shader: 2.0b
Vertex Shader: 2.0b


Our review database contains 58 reviews of the Radeon X850 XT Platinum.

Retail boards based on this design (2)

Name GPU Clock Memory Clock Other Changes
Sapphire Blizzard X850 XT Platinum Edition 540 MHz 590 MHz 2x DVI 1x S-Video
Sapphire Blizzard X850 XT Platinum Edition 540 MHz 590 MHz 2x DVI 1x S-Video