1280x800 resolution with an OpenGL 2.0-compatible graphics card.
Windows XP (SP3), Windows Vista (SP1), or Windows 7. RAM: 1GB (2GB recommended for HD playback). Hard Disk Space: 2GB of available space for installation. 1280x800 resolution with an OpenGL 2
Enhanced native 5.1 multichannel file support and mixing capabilities, including a dedicated Track Panner panel. Windows Vista (SP1)
The "Build 1815" iteration of CS5.5 focused on stability and workflow efficiency for broadcast and post-production professionals. 1280x800 resolution with an OpenGL 2
Audition CS 5.5 and the future of Audition - Adobe Community