I am stable @ 4ghz w/ no HT, but w/ HT on, I eventually get freezing or BSOD. I dont know why... which voltages or settings are off? Itried raising a few voltages (cpu, ioh, ich, ioh csi) a few notches, but still no dice.
I've got i7 920, 6gigs ddr3 1600 RAM, ASRock X58 Extreme mobo.
CPU Ratio: 21 (speedstep on)
QPI: just under 7, cant remember. its the lowest setting
Uncore: 30xx (twice the dram)
CPU Voltage: 1.275v (1.248 in windows)
DRAM Voltage: 1.65( probably can go lower, havent tested)
IOH Voltage: 1.1 (default)
VTT Voltage: 1.410v
ICH Voltage: 1.1v (default)
IOH/CSI Voltage: 1.16v (default)
IOH/ICH PCI-E Voltage: 1.56 (default)
CPU PLL: 1.86v (default)
Ancient_1 out of curiosity what are your temps like in Smart Guardian on that board?
Compared to my LP UT X48-T2R board I find the "System" temp in Smart Guardian quite toasty with case and peripherals as well as cooling fans all identical.
You can see my temps listed in the Everest display in my screenshot. what Everest lists as CPU is the same as SG CPU what Everest Lists as PWM is what SG says is system and chipset is the same on both.
The Volterra digital pwm on the DFI boards do run quite warm (just like they do on both ATI and Nvidia video cards) but can stand a lot of heat well past 100°. The warmest I have seen mine is 75 but normally even under Linx it usually tops out in the mid to upper 60's.
The main reason the System/PWM on your x48 was cooler is mainly the CPU was probably drawing much less current. On my LP LT P35 I very seldom was in the 40's but I was only running a 8400 Wolfdale.
Here is a screen shot I just took and you can see that Everest and SG both report the exact same (other than when they fluctuate slightly one can be behind the other)as long as you know which each correspond to.
Did you install the flame freezer? It is good for a few degrees nothing drastic tho. One advantage I have is the Fortress has one of it's intake fans on top which blows cool air directly onto the HS, PWM area and the memory which does a pretty good job of keeping the hottest areas of the MB fairly cool.
Good to know that encourages me to move to my next experiment which is a different case and also moves the PSU to the bottom similar to what you are displaying.
I have two of the units and one the flame freezer is on the outside as you show and on the other inside as instructions recommended but neither seems to do much and I even went so far as to apply TIM to the heatpipe where it contacts the NB.
I've come to the conclusion i7's simply need better cases and if I can bring those temps down a bit I'll likely be able to crank it up a bit more safely.