Quote Originally Posted by SteveRo View Post
2gb modules have been a problem for some folks when ocing.
You may need gobs of v.
For example my pi 2k memory - when I turn on xmp - it sets the qpi v to 1.555v!!!

Barring adding lots of voltage, send a complete list of your settings, v's, multi's, bclock, ... and lets see if anything looks unusual.
Ok Here goes

F6a
20x190 Turbo enabled
QPI x36 = 6.84GHz
Uncore Auto = 3800MHz
Isochronous support enabled
performance enhance STD
Multiplier 6 = 1140MHz
DRAM timing Auto - this shows 7,7,7,20,1T in BIOS
CPU-Z shows FSB : DRAM 2:6 8,8,8,22,1T
LLC Disabled
VCore - 1.425
QPI 1.395
IOH 1.100 AUTO
DRAM 1.5v AUTO
QPI Pll 1.14v
Dram termination 0.75v AUTO
CH A,B,C Data V Ref 0.75v AUTO
Ch A,B,C Address ref 0.75v AUTO

Tried to manually set Dram Volts to 1.64 and timings to 8,8,8,24 which is where the memory (OCZ Gold 1600MHz) was rated for 1600MHz operation, left everything else the same. This didn't work so tried Uncore at 17x and 16x as you suggested, neither worked