Not looking good... I can post at 400 x 9 with vMCH maxed (only 1.65) but it crashes when it starts loading windows. I tested in 100 mhz increments (from 3.6 down to 3.2). It's the same (posting but no windows load) all the way down until 356 x 9 (3.2 ghz). At 3.2, windows will load but gives me a BSOD about memory management. Clearly 975X is a failure when it comes to quads. I'm sure the 1.85 vMCH will help for those who have the option, but unfortunately it looks like its ~3.0 for me, until I get a new x38 board.