HP

From cchtml.com

Workstation

Model Graphics Status Distributions
xw4200 Workstation FireGL V3100, FireGL V5100 Works
xw6200 Workstation FireGL V3100, FireGL V5100 Works
xw8200 Workstation FireGL V3100, FireGL V5100 Works
xw9300 Workstation (2x AMD Opteron Rev E) FireGL 5200 works Debian 4.0r3 , fglrx 8.44.3

Desktops

Model Graphics Status Distributions Notes
HP A1629.uk Pavilion ATI Radeon Xpress 200 Unknown
HP t5735 Thin Client ATI Radeon X1250 Works Debian 4.x

You got to push it-this essetnail info that is!