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ATI Radeon X850 XT

ATI Radeon X850 XT Image ATI R480 Image
The Radeon X850 XT was a graphics card by ATI, launched in December 2004. Built on the 130 nm process, and based on the R480 graphics processor, in its R480 XT variant, 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 520 MHz, memory is running at 540 MHz.
We recommend the ATI Radeon X850 XT for gaming with highest details at resolutions up to, and including, 1280x720.
Being a dual-slot card, the ATI Radeon X850 XT draws power from 1x 6-pin power connectors, with power draw rated at 69 W maximum. Display outputs include: 2x DVI, 1x S-Video. Radeon X850 XT is connected to the rest of the system using a PCIe 1.0 x16 interface.

Graphics Processor

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

Graphics Card

Released: Dec 1st, 2004
Production Status: End-of-life
Bus Interface: PCIe 1.0 x16

Clock Speeds

GPU Clock: 520 MHz
Memory Clock: 540 MHz
1080 MHz effective


Memory Size: 256 MB
Memory Type: GDDR3
Memory Bus: 256 bit
Bandwidth: 34.6 GB/s

Render Config

Pixel Shaders: 16
Vertex Shaders: 6
TMUs: 16
ROPs: 16
Pixel Rate: 8.32 GPixel/s
Vertex Rate: 0.780 GVertices/s
Texture Rate: 8.32 GTexel/s

Board Design

Slot Width: Dual-slot
TDP: 69 W
Outputs: 2x DVI
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


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

Retail boards based on this design

Name GPU Clock Memory Clock Other Changes
HIS X850 XT IceQ II Turbo 540 MHz 590 MHz