Consult the "Windows Specifications for Avid Symphony v5.5.pdf" documentation at the bottom of the page.

For Media Composer 6, Symphony 6 and Newscutter 10 Qualified Systems click here

Update March 28, 2013:
 

• Added K4000 support for z820

Update December 27, 2012:
 

• Added z820 support

Update: May 16th, 2011:

• Added support for Win 7 SP1 (service Pack 1)

Update: April 4th, 2011:

• Added support for NVIDIA Quadro 4000 on HP z800 (6-Core systems only).
  • Requires Symphony 5.0.3.8 and higher
  • Requires Win 7 and NVIDIA driver 259.77

Update: February 24th, 2011

• Microsoft released SP1 for Windows 7 on February 22nd. At this time, Avid does not support SP1 for Windows 7 on Symphony systems.

For BIOS information and installers, see BIOS Information for HP Video Editing Platforms