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i7 920 Cant get past 3.1 ghz - Page 2

post #11 of 30
Thread Starter 
Yes its rated at 1.65
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post #12 of 30
What is your memory speed actually set at?

Try 166*21 for the CPU (1.375V CPU / 1.3V QPI/VTT)
Use the 10x multiplier for your memory (1660MHz) and set 9-9-9 27 timings with 1.65V.

Leaving everything else at default, that should boot on 95% of systems.
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post #13 of 30
Thread Starter 
ill give those numbers a try!
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post #14 of 30
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still to no avail anyone???
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post #15 of 30
Try lowering the memory multiplier to 8x and see if it boots. If not, try dropping the CPU multiplier to 18x. 166x18 is about 3.0GHz. Since this is lower than what you've reached so far, it will tell us if your issue is with the BCLK or the CPU speed.
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post #16 of 30
Thread Starter 
Still no luck....
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post #17 of 30
I used to have i7 920 that didn't like QPI higher than 1.2v. Small bump from 1.2v and it would bsod.
Maybe try just 1.2v
Make sure to use the right uncore to RAM ratio - 2:1 and the lowest QPI multi.
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post #18 of 30
20x @ 180 for 3.6GHz and around 1.24vcore. Qpi 1.25v......those should be close?? Whats ur bsod code?
    
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post #19 of 30
I'm new to the overclocking seen, but I played around with it to help broaden my horizons. I too have a i7 920 c0. The highest I was able to get was 4.0ghz, however it ran at 90C under a full load and that was just too hot for my peace of mind. I ran it steadily at 3.6ghz (turbo and hyperthreading on) for about a month before setting it back down to defaults. I dont remember the block speed (which will be easy to figure out) but I remember I wrote the volts down as a reminder and they are as follows:
cpu voltage = 1.35
uncore voltage = 1.3
ioh voltage = 1.25

I hope that helps. Unfortunately, when I built this computer 4 years ago I had no intention of OC'ing it so I stuck with the Intel board. I'm pretty limited on my bios options, but I'm confident if I was able to do it you can too!
post #20 of 30
First make sure your frequencies are set right. You have your ram and UCLK set to auto, you're going to break something. Once you have that sorted move onto voltages.

A c0 could need a lot more than 1.27v. Its best to set all your voltages in manually. If you cant do that, at least work with vcore, qpi, and PLL, manually.

Here is a thread on a similar ASUS motherboard. http://www.overclock.net/t/662236/the-asus-p6x58d-premium-e-thread

Post 2 has links for d0 setting(increase vcore for c0)

My asus mobo has been a godsend compared to my evga board.
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