Hi everyone!
I have been several weeks with this problem with the motherboard.
Asus Formula 79 detects only 12gb . 16 gb installed (4x4gb Gskill Ripjaws Z 2133Mhz 16 GB 9-11-10-28-2N)
When buying Gskills memories 2133MHz tested and 100% compatible for socket 2011 with the 2105 bios there was no problem as I detected 16 gb smoothly.
These days I've been doing a lot of testing and I think these Asus RoG board is somewhat delicate with Ram issue in other forums and read similar cases touristy as Solution have had to make a plate.
Tests conducted so far and all equal in bios = 12Gb RAM Memory:
1º Rams in exchange in all the slots and always detects 12Gb. Probe one again and always same result.
2º Tested with both bios.
3ºUpdate to the latest bios 4002 and 4104.
4º Charge the backup bios 2105 and Clear CMOS.
5ºFrom the bios 5th load two XMP profiles.
6º Gskill Ripjaws Z 2133Mhz tested in another motherboard work correctly.
Here I leave the images that demonstrate the case.
http://imageshack.us/photo/my-images/27/fh16.jpg/http://imageshack.us/photo/my-images/546/o34g.jpg/http://imageshack.us/photo/my-images/707/g5ho.png/http://imageshack.us/photo/my-images/850/6okm.png/Since I can only remove the socket and see if there is any bent pin. But it is strange if I do not tear the Pc.
Sorry for my bad English
Best Regards