Operating System: Only Windows XP SP2 and Windows Vista RC1 or later are supported at this time.
Web Browser: IE6, IE7, Firefox 1.5 and Firefox 2.0
Memory: 256 MB of memory is a bare minimum; 1GB recommended.
Disk: This technology preview uses almost no disk space. The ActiveX control is less than 5MB in size, and no local disk storage is used when the code is running.
Graphics: We have tested Photosynth on graphics cards that are "Vista Aero Ready". This includes: support for DirectX 9 graphics with a WDDM driver, 128 MB of graphics memory (minimum), and 32 bits per pixel. If you want to find out whether your card is suitable, the Vista Upgrade Advisor tool will tell you. Photosynth may run on cards that do not meet this requirement, but performance may be poor and functionality may be impaired.