Macintosh	Windows
Operating System	Mac OSX 10.5, 10.6 (current maintenance releases)	Windows XP, Windows Vista, Windows 7 (current maintenance releases)
Processor	PowerPC G5 or Intel Core	Pentium 4 or similar
Memory	2GB RAM	2GB RAM
Hard Disk	200 MB Hard Disc Space	200 MB Hard Disc Space
Display	OpenGL 2.0 capable video card with 128MB VRAM running at 1024x768 (1280x1024 or higher recommended)	OpenGL 2.0 capable video card with 128MB VRAM running at 1024x768 (1280x1024 or higher recommended)
Host Application	Adobe Photoshop CS2, CS3, CS4 (PhotoTools does not support Photoshop Elements)	Adobe Photoshop CS2, CS3, CS4 (PhotoTools does not support Photoshop Elements)
Optional Integration	Apple Aperture 2.1 Adobe Photoshop Lightroom 2 (Lightroom and Aperture integration requires a full version of Photoshop)	Adobe Photoshop Lightroom 2 (Lightroom integration requires a full version of Photoshop)
Other	Internet connection for activation, auto updates and video tutorials Adobe Flash 10 player DVD drive for installation from disc Administrator privileges to install and uninstall	Internet connection for activation, auto updates and video tutorials Adobe Flash 10 player DVD drive for installation from disc Administrator privileges to install and uninstall Microsoft .NET 3.5 framework or higher (installed automatically if missing)