i dont understand why the 128M is being hyped so much.
you just need the correct bios..
here you all go... bios for all 790GX T-Series Biostar boards...
Bios
Do not flash from windows.. Refer Board Manual to understand how to flash using T-bios Flasher Utility (Very easy process)
The R1 version of bios are supposed to work fine but the normal one worked fine for me on TA790GXBE (Cost me 9.9k along with 550BE)
Only one issue...
To unlock -
1) Set HT link speed = 1.6GHz
2) Set ACC = Auto
Now your board will boot with all cores...
3) Install AMD OverDrive within windows
4) Set HT Multiplier = 10x (for HT = 2GHz)
5) Apply...
6) Done...
Alternatively... You can try setting HT = 2GHz within bios... board may not boot with display... In that case you will have to clear CMOS
PS: Flash only with the board model you have...