ATI Radeon X1800 GTO2 vs ATI Radeon X800 PRO

Graphics Processor

GPU model R520 R423
Architecture R500 R400
Manufacturing process 90 nm 130 nm
Number of transistors 321 million 160 million
Die size 288 mm² 289 mm²
GPU variant R423 PRO

Graphics Card

Release date Mar 1st, 2006 May 1st, 2004
Generation Radeon R500 PCIe Radeon R400 PCIe
Production End-of-life End-of-life
Interface PCIe 1.0 x16 PCIe 1.0 x16
Reviews 76 in our database 226 in our database
Predecessor Radeon R400 PCIe Radeon R300
Successor Radeon R600 Radeon R500 PCIe


GPU clock 500 MHz 475 MHz
Memory clock 500 MHz 1000 Mbps effective 450 MHz 900 Mbps effective

Memory Configuration

Memory size 256 MB 256 MB
Memory type GDDR3 GDDR3
Memory bus width 256 bit 256 bit
Bandwidth 32.00 GB/s 28.80 GB/s

Render Configuration

Pixel shaders 12 12
Vertex shaders 8 6
TMUs 12 12
ROPs 12 12


Pixel rate 6.000 GPixel/s 5.700 GPixel/s
Vertex rate 1.000 GVertices/s 712.5 MVertices/s
Texture rate 6.000 GTexel/s 5.700 GTexel/s

Dimensions & Outputs

Slot width Single-slot Single-slot
TDP unknown 48 W
Suggested PSU 200 W 200 W
Outputs 2x DVI1x S-Video 1x DVI1x VGA1x S-Video
Power connectors 1x Molex

API Support & Features

DirectX 9.0c (9_3) 9.0b (9_2)
OpenGL 2.1 2.1
Shader model 3.0
Pixel shader 2.0b
Vertex shader 2.0b

Other Features


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