I purchased another fm1 motherboard off the discount rack at the local fry's (my 4th fm1 board). The GA-A75M-UD2H died on me after a week of instability and problems booting it stopped seeing hard drives.
F1A75-V Pro
6+2 vrm likely the board I should have gotten in the first place.
It supports the samsung 30nm mem (GA-A75M-UD2H did not).
Amazing throttling ability for low power use, stable as a brick.
The only downside is the northbridge freq is locked so it's about 5% slower than the gigabyte board at the same clocks/settings.
Also it appears asus automatically sets the nb div by mem speed as per the following table I worked out. So with my chip only able to do about 800MHz nb that limits me to the lowest mem speed of 1064.
Chart of FM1 clocks
Almost certainly mapping 6.0 to 4.0 and advancing in lockstep.
Also the sata stops working at 133bclk, like all the other fm1 boards, (the asmedia chip likely works, but I didn't try it). So just like the other 3 fm1 boards 133bclk is a pipe dream.
This should tide me over untill haswell or further