Yes I have the Tforce6100-939. It is a great overclocking board for a mATX, but the voltage sags and fluctuates a bit more than, say, my DFI LANPARTY Expert board. I would have to run my board at 355MHz HTT to get that Opteron 144 to around 3.2GHz, and I'm not sure that the board can do it, let alone the processor - though I'll test that CPU on my Expert board when I get a chance. These Biostar boards seem to top out around 320-330MHz HTT, though I had one that strangely wouldn't do past about 280MHz HTT (and one DOA :| ). I've now owned about five of the socket 939 versions, two of the socket 754 versions and one socket AM2 version of the Tforce6100 board.