Allright... first f all, I'm not THAT experienced with these chips However, I thought 5 GHz should be pretty easy on any D0 Nehalem at -70 or so, but that's not the case here. Seems to a CPU frequency "wall" somewhere, I cant get 5 GHz to boot into windows no matter what I do. Highest stable is like 4800-4850 MHz, and still at -70c and 1.55v vcore Either this board is a dud, or I have no clue what I'm doing. Bclk seems allright, did 245x19 without pushing the rig.
Here are my Extreme Tweaker settings:
mp: 25
bclk: 200
pcie: 120
dram: 1203mhz
uclk: 2406
qpi link: slow mode
cpu differential: 1000mv
cpu clock skew: auto
ioh clock skew: auto
digi+ pwr mode: x-power
pwm volt. control: 10v
LLC: disable
cpu voltage ocp: disabled
cpu pwm freq: 1000khz
extreme ov: disabled
extreme oc: mode 1
vcore: 1.55v
cpu pll: 1.9v
qpi/dram voltage: 1.38v
dram voltage: 1.65v
ioh voltage 1.44
ioh pcie: auto
ich voltage: 1.40
ich pcie: auto
spread spectrums disabled.
All dram ref voltages on auto, same with the timings.
Disabled all cpu features except ht.
Tried bios 0002, 1102 and 1401. Ran i7 965, w3550 and w3565 on the 1102 bios. Also tried alot of different uncore and mem combos, no change.Tried IOH from 1.25v to 1.45v, no change. Ditto with ICH, but 1.4v max. Tried up to 1.5v QPI, and i tried to run the lowest, non-slow mode QPI link setting, too.
So... what's up here?
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