ATI R423

R423

R423 GL-SE

Block Diagram

ATI's R423 GPU uses the R400 architecture and is made using a 130 nm production process at TSMC. With a die size of 289 mm² and a transistor count of 160 million it is a medium-sized chip. R423 supports DirectX 9.0b (Feature Level 9_2). Modern GPU compute technologies are not available. 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).

Graphics Processor

Released: Mar 1st, 2004

GPU Name: R423

Mobile Variant: M28

Codename: Thor

Architecture: R400

Foundry: TSMC

Process Size: 130 nm

Transistors: 160 million

Density: 553.6K / mm²

Die Size: 289 mm²

Package: FCBGA-1265

Package Size: 42.5 mm × 42.5 mm

Graphics Features

DirectX: 9.0b (9_2)

OpenGL: 2.1

OpenCL: N/A

Vulkan: N/A

Pixel Shader: 2.0b

Vertex Shader: 2.0b

WDDM: 1.0

Compute: GFX2

Render Config

Pixel Shaders: 16

Vertex Shaders: 6

TMUs: 16

ROPs: 16

Max. TDP: 91 W

All R400 GPUs

ATI GPU Architecture History

2009-2015 TeraScale 2
2005-2013 TeraScale
2005-2007 Ultra-Threaded SE
2004-2008 R400
2002-2008 R300
2001-2006 Rage 7
2000 Rage 5
2000-2007 Rage 6
1999-2001 IBM
1998-1999 Rage 4
1997 Rage 2
1997-1999 Rage 3
1992-1997 Mach
1986-1992 Wonder

Graphics cards using the ATI R423 GPU

Name	Chip	Memory	Shaders	TMUs	ROPs	GPU Clock	Memory Clock
ATI Radeon X800 XT	R423 XT	256 MB	16 / 6	16	16	500 MHz	500 MHz
ATI Radeon X800 XT Platinum	R423 XT	256 MB	16 / 6	16	16	520 MHz	560 MHz
ATI Radeon X800 SE	R423 SE	128 MB	8 / 6	8	8	425 MHz	350 MHz
ATI FireGL V5100	R423 GL-SE	128 MB	12 / 6	12	12	450 MHz	350 MHz
ATI FireGL V7100	R423 GL	256 MB	16 / 6	16	16	493 MHz	475 MHz
ATI Radeon X800 XT Mac Edition	R423 XT	256 MB	16 / 6	16	16	475 MHz	500 MHz
ATI Radeon X800 GTO	R423 GTO	128 MB	12 / 6	12	12	400 MHz	350 MHz
ATI Radeon X800 PRO	R423 PRO	256 MB	12 / 6	12	12	475 MHz	450 MHz

R423 GPU Notes

Mobile Variant: M28
Codename: Thor
Graphics/Compute: GFX2
Smart Shader HD
Smooth Vision HD
TruForm 2.0
Hyper Z HD
Video Shader HD
3Dc Compression
Programmable pixel&vertex pipelines

Latest Drivers:
Windows 2000:
Catalyst Software Suite 6.2

Windows XP / Vista:
Catalyst Software Suite 10.2

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