Hello,

I have found that following boards are indicated as supported:

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ASUS M4A785-M WIP... AMD Fam10h AMD RS780/SB700 ITE™ IT8712F AMD Athlon™ 64 / FX / X2 Socket AM3/AM2(+) DIP8 SPI Y Y —

ASUS M4A785T-M OK... AMD Fam10h AMD RS780/SB700 ITE™ IT8712F AMD Athlon™ 64 / FX / X2 Socket AM3 DIP8 SPI Y Y —

ASUS M4A78-EM OK... AMD Fam10h AMD RS780/SB700 ITE™ IT8712F AMD Athlon™ 64 / FX / X2 Socket AM3/AM2(+) DIP8 SPI Y Y —

ASUS M5A88-V OK... AMD Fam10h AMD 880G/850 ITE™ IT8721F AMD Athlon™Phenom™Sempron™ 64 / FX / X2 Socket AM3/AM3+ DIP8 SPI Y Y —

GIGABYTE GA-MA785GMT-UD2H OK... AMD Fam10h AMD 785G / SB710 ITE IT8718F AMD Phenom™ II / Athlon™ II Socket AM3 ? ? ? ? —

GIGABYTE GA-MA78GM-US2H OK AMD Fam10h AMD 780G / SB700 ITE IT8718F AMD Phenom™ / Athlon™ / Sempron™ Socket AM2+ ? ? ? ? —

And actually most of them missing any info on the status page and somewhere is info like:
The boards works only with less than 4GB of RAM, if installed more then it does not boot Linux.

You can see that some AMD 16GB boards support 32GB two with 4x8GB modules:

https://www.overclockers.com/forums/showthread.php/698565-Can-i-use-8GB-DDR3-single-module-with-Biostar-TA785-G3

http://www.tomshardware.com/answers/id-1714859/asus-m5a88-evo-ram.html

But these are 32GBs with their original BIOSes.

What about 16GB or 32GB with a Coreboot flashed on these boards?
Did anyone tested and used such config with 16GB or 32GB DDR3 RAM?

Kind Regards,
Alex