Anyone use one of these MXM AMD FirePro S7100X? They are the cheapest SR-IOV GPU I can see. They are a downclocked S7150, so they are terribly fast, but they should do older games/video encode/decode fine.
I ordered one as well as a single MXM to PCI-E adapter.
The other thing that caught my eye are these HP quad MXM to PCI-E cards. 4 MXM cards in a single slot would me nice for a virtualized server setup. 4 S7100X and the quad card would be cheaper than a S7150x2 with 180% of the power.