The most fully tested versions of these platforms are:
Windows
Windows Server 2012
Windows Server 2008
Windows 7
Linux
The minimum recommended versions of particular distributions are:
CentOS 6
Ubuntu 14.04
Supported Platforms with GPU support
Windows x86 64. The only requirement for GPU Media Server is that NVIDIA driver 352.07 (or later) is installed on the machine, so any Windows operating system on which you can successfully install this driver is supported.
Linux x86 64
The most fully tested versions of these platforms are: