ATI R481

R481

R481 XT

Die Shot

ATI's R481 GPU uses the R400 architecture and is made using a 130 nm production process at TSMC. With a die size of 297 mm² and a transistor count of 160 million it is a medium-sized chip. R481 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: Feb 28th, 2005

GPU Name: R481

Codename: Loki

Architecture: R400

Foundry: TSMC

Process Size: 130 nm

Transistors: 160 million

Density: 538.7K / mm²

Die Size: 297 mm²

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: 69 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 R481 GPU

Name	Chip	Memory	Shaders	TMUs	ROPs	GPU Clock	Memory Clock
ATI Radeon X850 XT Platinum AGP	R481 XTP	256 MB	16 / 6	16	16	540 MHz	590 MHz
ATI Radeon X850 XT AGP	R481 XT	256 MB	16 / 6	16	16	520 MHz	540 MHz
ATI Radeon X800 GTO AGP	R481 PRO	256 MB	12 / 6	12	12	400 MHz	490 MHz
ATI Radeon X800 GT AGP	R481 SE	256 MB	12 / 6	12	12	475 MHz	493 MHz
ATI Radeon X850 PRO AGP	R481 PRO	256 MB	12 / 6	12	12	500 MHz	500 MHz

R481 GPU Notes

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

Chip Codes:
215RBHAGA11F

Latest Drivers:
Windows 2000:
Catalyst Software Suite 6.2

Windows XP / Vista:
Catalyst Software Suite 10.2

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