I found this blog post dated Feb 20th 2013.
View Accelerated – 3D Graphics with Horizon View 5.2
I don't know if this is still true, but it states:
As of this post, Supported Servers are:
SuperMicro SYS-1027GR
SuperMicro SYS-2027GR
Cisco C240 M3 with GPU kit
Dell R720 with GPU kit
HP WS460 with Graphics Expansion
HP DL 380
IBM DX360 M4
IBM X3650 M4
IBM Flexsystem
Are other systems supported?
