FYI, I'm using some stock Kingston ValueRam 1333 DDR3 (4x4GB), (no overclocking) and as of now I have passed memtest86 twice, once in Jan, when I got the board, and once a week ago, where I did the same test on a replacement board for the bricked first board (which I unfortunately damaged in the RMA process). I remember trying G.Skill and Geil 8GB modules back in Jan, but they didn't work.
Kingston and Transcend always worked in all my systems (again, always standard no overclocking, no no over/undervolting, always 1.5V)
TBH, I'm looking at this board only out of curiosity and since we're making a fun out of betting if/when Intel is actually capable of doing boards/BIOSes I will probably give it away to someone I don't really like :-).
For my main desktop I have already got a new ASUS board and am building that one up now. Maybe they're better, who knows. OTOH chances are that the chipset itself is unfinished and will never be finished, since no one cares anymore.
Another DZ68DB BIOS 035 weirdness:
As stated before, the default memry voltage for my RAM is 1.5V, but is reported in tools as 1.58V. If I set the voltage manually to 1.5V in BIOS -performance, then all tools also report 1.507V. So that is how I kept it. Ran memtetst86+ extensively with this setting, all OK:
Now plugged in a USB device (a USB Headphone, and/or webcam) - and lo the board fails to boot, complaining about bad performance settings.
It only boots if I remove the manually added memory voltage of 1.5V to the default (which is also 1.5V, but reads as 1.58V in tools).
Now there may be something that makes the BIOS think that this RAM config should run at 1.58V. But Why does it complain when I attach USB devices????? Is the USB enumerator overwrting the CMOS in places where performance settings are stored???
As I said, this BIOS has issues with USB enumerations
Can'T use BIOS 040 will probably brick the second board. So Intel please fix your BIOSes!