This board really is a tough nut to crack. Been playing around with it yesterday and running at 8x450 right now on my Q9450 and I can run 3dmark 06 and 3dmark vantage without any problems but as soon as I run memtest in windows or start up OCCT I get errors within 1 minute.

increasing Vcore does not do a thing so it must be my RAM. Also because memtest gives errors before it reaches 1% of the test.
Silly thing is that the RAM is running well below specs. I got the OCZ PC3-10666 ReaperX HPC Enhanced Bandwidth 2x2Gb kit which should be able to handle 1333Mhz 6-5-5-20 timings at 1,8v and I have it now at 1200Mhz 6-6-5-20 (2T) and it fails.

Tried to increase NB voltage but no effect. What do you guys think I should look for in solving this?