Intel® Pentium 4, Intel Centrino®, Intel Xeon, Core™ Duo (or compatible) processor
Microsoft® Windows XP with Service Pack 2 or
Windows Vista™ Home Premium, Business, Ultimate or Enterprise (certified for 32-bit editions)
512MB of RAM
1GB of available hard disk space
DVD-ROM drive
1024x768 monitor resolution with 16-bit or greater video card
Some 3D features in Photoshop CS3 Extended require a DirectX 9 capable graphics card with at least 64MB of VRAM

1.8GHz or faster processor
Microsoft® Windows® XP with Service Pack 2 (Service Pack 3 recommended) or Windows Vista® Home Premium, Business, Ultimate, or Enterprise with Service Pack 1 (certified for 32-bit Windows XP and 32-bit and 64-bit Windows Vista)
512MB of RAM (1GB recommended)
1GB of available hard-disk space for installation; additional free space required during installation (cannot install on flash-based storage devices)
1,024x768 display (1,280x800 recommended) with 16-bit video card
Some GPU-accelerated features require graphics support for Shader Model 3.0 and OpenGL 2.0
DVD-ROM drive
QuickTime 7.2 software required for multimedia features
Broadband Internet connection required for online services*

Intel® Pentium® 4 or AMD Athlon® 64 processor
Microsoft® Windows® XP with Service Pack 3; Windows Vista® Home Premium, Business, Ultimate, or Enterprise with Service Pack 1 (Service Pack 2 recommended); or Windows 7
1GB of RAM
1GB of available hard-disk space for installation; additional free space required during installation (cannot install on removable flash-based storage devices)
1024x768 display (1280x800 recommended) with qualified hardware-accelerated OpenGL graphics card, 16-bit color, and 256MB of VRAM
Some GPU-accelerated features require graphics support for Shader Model 3.0 and OpenGL 2.0
DVD-ROM drive
QuickTime 7.6.2 software required for multimedia features
Broadband Internet connection required for online services*