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Adobe® Photoshop® Read Me
Welcome to Adobe® Photoshop® CS5.1. This document contains late-breaking product information, updates, and troubleshooting tips not covered in the Photoshop documentation.
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Minimum system requirements
Install your software
Uninstall your software
Trial software
Electronic licensing
Registration information
Font installation
Known issues
Customer care
Other resources

Minimum system requirements
Windows®
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2GHz or faster processor*
Microsoft® Windows® XP with Service Pack 3, Windows® Vista® Home Premium,
Business, Ultimate, or Enterprise with Service Pack 2, Windows® Vista® 64-bit or
Windows® 7
1GB of RAM or more recommended
1GB of available hard-disk space for installation; additional free space required during installation (Photoshop CS5.1 cannot be installed on flash-based storage devices.)
1,024x768 display (1,280x800 recommended) with qualified hardware-accelerated
OpenGL® graphics card, 16-bit color and 256MB VRAM
DVD-ROM drive
Some 3D features in Adobe Photoshop Extended require an OpenGL 2.0 capable graphics card with at least 256MB of VRAM (512MB VRAM is recommended)
Shader Model 3.0
Some features in Bridge rely on DirectX9 capable graphics card with at least 128MB of
VRAM
QuickTime 7.4.5 required for multimedia features
Broadband Internet connection required for online services

*SSE2-enabled processor required for AMD systems

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Mac OS X
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Multicore Intel® processor
Mac OS X v10.5.7 minimum is required; Mac OS v10.6.2 is recommended; 32-bit and
64-bit systems (You may need to run 32-bit in order to run 32-bit only plug-ins.)
1GB of RAM or more recommended
2GB of available hard-disk space for installation; additional hard-disk space required during installation (Photoshop CS5.1 cannot be installed on a volume that uses a casesensitive file system or on flash-based storage devices.)