i7 920 2.6ghz at 3.6ghz overclock on RIIE, almost stable, BSOD help?

[markm75]

I'm working on getting my CPU overclocked to 3.6ghz (on air).


For reference:

I have a thermaltake case with 4 120mm silverstone fans in the front (Front HDD fans are FM121-B x 4 (120mm silverstones) 17-39DBA 2400 RPM, max airflow 110.03CFM, pushing the HDD heat to back) and on the xigmatech cooler is a good 120mm fan, then on the rear i have an antec 120mm fan. I have 11 harddrives going at once (12 drive bay).

At 2.6ghz, with case closed, i get between 36 and 40C for idle temp roughly.
At 3.6ghz, i'm averaging 36-40C idle with Case OPEN and 74C on prime95 blend for a max (is this too high? 90C is the cutoff area). These temps via speedfan.

I received a BSOD during prime95 blend overnight:
stop 0x00000124 with these settings:

AI overclock =manual
CPU =18x
CPU Turbo power limit = Enabled
BCLK = 200
PCIE = 100
Dram = 1603
UCLK = 3208
QPI Link Dram = auto
dram timing 88824
EPU II phase = full
LLC(load line calibration) = enabled
cpu diff amp = auto
Extreme OV = disabled
CPUV = 1.26
CPU PLL = 1.86
QPI = 1.3
IOHV= auto
IOHPCIE = auto
ICHV = auto
ICHPCIE=auto
Dram Volts = 1.65
CPU spread spectrum = disabled
pcie spread = disabled
CPU clock skew = auto
IOH clock skew = auto
C1E = enabled
Hardware prefetch = enabled
adjust. cache prefetch = enabled
virtualization = enabled
speedstep = DISABLED
CPU TM = enabled
Cstate = disabled
Execute disable bit = enabled
HT = enabled
A20M=disabled

*Now that i've bluescreened, does anyone think i should probably revert my C (OS) image back to one before the bluescreen (could there be corruption as a result of bsod)?

**I'm guessing my BSOD is due to the qpi being low or maybe CPUV..

I will run a test tonight to try again, this time i've changed:
CPU PLL = 1.88 (probably not going to help)
QPI = 1.34

This is on the rampage II extreme board (dual ati 4870's), with 12GB Corsair TR3X6G1600C8D (1600mhz 88824).

The board runs stable (i think) at regular settings, with qpi at 1.35 dram at 1.65, cpuV i think was auto on my normal settings and 1600mhz for ram.

Any thoughts on what to tweak here?

Thanks

[Lsdmeasap]

0x00000124 BSOD means you need more QPI/Vtt voltage

[markm75]

Originally Posted by Lsdmeasap

0x00000124 BSOD means you need more QPI/Vtt voltage

Thanks, i've gone back to 1.35 qpi as i was stable at regular settings there, will prime95 it later on..

I also lowered CPU PLL to 1.86 for now. Left cpuV at 1.26.

Speedstep still off.

Someone also suggested going with 19x190, which i have, (ram now at 1555 or so).

I'm assuming if all of the above it stable, i could try to lower CPV and PLL, and then eventually turn speedstep back on (if speedstep is usefull)?

[Lsdmeasap]

I would not use speedstep at that high clock, but you can try it will just take you much more tweaking to get stable.

What did you lower to 1.35 QPI/Vtt? I said 124 BSOD means you need more not less, so just checking

[markm75]

Originally Posted by Lsdmeasap

I would not use speedstep at that high clock, but you can try it will just take you much more tweaking to get stable.

What did you lower to 1.35 QPI/Vtt? I said 124 BSOD means you need more not less, so just checking

Yep qpi.

What does speedstep do exactly..

[Lsdmeasap]

It allows the board to lower your CPU multi and voltages when Idle >>
SpeedStep - Wikipedia, the free encyclopedia

[markm75]

Originally Posted by Lsdmeasap

It allows the board to lower your CPU multi and voltages when Idle >>
SpeedStep - Wikipedia, the free encyclopedia

Ah ok, i thought it was some sort of power saver mode.. Sucks b/c my electric bills have been rather high :D

[Lsdmeasap]

It is, it saves power.

[markm75]

I'm still getting the 124 bsod screen w prime95 blend. Usually minutes into the test. My qpi is 1.35 with ram at 1.65. I've even tried changing ratio and bclk which lowered ram speed to 1445ish. No luck. Cpuv at 1.26 but as noted this error is ram related

any thoughts?

[Lsdmeasap]

BSOD 124 means you need more QPI/Vtt, simple raise it that is ALL you need to do