I test alot of stuff, I have a demo lab that is awesome. I was reading in a airport the other day about Unity3d and their game dev app. This was surly a task well fitted to test with XenDesktop 7.5, HDX 3D Pro and the NVIDIA Grid K2 card I have.
In this demo you will se Unity 4.5 in action, import of a game, and realtime test rendring with gameplay!
Demo is running on XenServer 6.2, Windows 7, XenDesktop 7.5(VDA 188.8.131.5223),8GB RAM, 4 vCPUs and a NVIDIA GRID K2 vGPU.
This shows that the technology that Citrix has developed is well up to the task of realtime rendring.