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ATI FireGL X3-256

Graphics Processor
Pixel Shaders
Vertex Shaders
256 MB
Memory Size
Memory Type
256 bit
Bus Width
ATI FireGL X3-256 Image ATI R420 Image
The FireGL X3-256 was a high-end professional graphics card by ATI, launched in August 2004. Built on the 130 nm process, and based on the R420 graphics processor, in its R420 GL variant, the card supports DirectX 9.0b. The R420 graphics processor is an average sized chip with a die area of 281 mm² and 160 million transistors. It features 12 pixel shaders and 6 vertex shaders, 12 texture mapping units and 12 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 491 MHz, memory is running at 454 MHz.
We recommend the ATI FireGL X3-256 for gaming with highest details at resolutions up to, and including, 1024x768.
Being a single-slot card, the ATI FireGL X3-256 draws power from 1x Molex power connectors, with power draw rated at 57 W maximum. Display outputs include: 2x DVI, 1x S-Video. FireGL X3-256 is connected to the rest of the system using an AGP 8x interface. Its price at launch was 1,099 US Dollars.

Graphics Processor

GPU Name: R420
GPU Variant: R420 GL
Process Size: 130 nm
Transistors: 160 million
Die Size: 281 mm²

Graphics Card

Released: Aug 3rd, 2004
Production Status: End-of-life
Launch Price: 1,099 USD
Bus Interface: AGP 8x

Clock Speeds

GPU Clock: 491 MHz
Memory Clock: 454 MHz
908 MHz effective


Memory Size: 256 MB
Memory Type: GDDR3
Memory Bus: 256 bit
Bandwidth: 29.06 GB/s

Render Config

Pixel Shaders: 12
Vertex Shaders: 6
TMUs: 12
ROPs: 12
Pixel Rate: 5.892 GPixel/s
Vertex Rate: 736.5 MVertices/s
Texture Rate: 5.892 GTexel/s

Board Design

Slot Width: Single-slot
TDP: 57 W
Outputs: 2x DVI
1x S-Video
Power Connectors: 1x Molex
Board Number: A301

Graphics Features

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


Our review database contains 226 reviews of the FireGL X3-256.

R420 GPU Notes

Graphics/Compute: GFX2