i7 920 overclocking thread

[{core2duo}werd]

[Jakethesnake011]

Monitor with RealTemp: http://www.techpowerup.com/realtemp/
And Core Temp: http://www.alcpu.com/CoreTemp/
watch CPU temperatures you do not want them to get too hot.

[laxrunner]

Originally Posted by falven

Sorry, that's what I meant...
Anyhow, my overclock isn't stable at 20X 180 with any vcore below 1.388 (BSOD: "A clock interrupt was not recieved on a secondary processor within the allocated time interval")... Are there any other voltages or options to help an OC become stable without having to add so much Vcore?

Your problem isn't vcore. If your vcore was too low, you would get a BSOD error code 0x0000000101 and something else after it. Sounds to me like your problem might be something involving the QPI/ram. Try setting QPI PLL to 1.25V, dram to 1.65V, and IOH vcore to 1.15V. Also what is your ram multi set at? you probably want 2:8 at a 180bclk.

EDIT: @jake, the 1.375V is max VID, not max vcore. I've posted this a couple times before, but VID is simply a reference voltage that isn't displayed in any software that I know of. Max vcore is 1.55V according to intel documentation. Hope that clears some things up. The i7 is easily able to run over 1.375V vcore.

[falven]

Originally Posted by Jakethesnake011

Monitor with RealTemp: http://www.techpowerup.com/realtemp/
And Core Temp: http://www.alcpu.com/CoreTemp/
watch CPU temperatures you do not want them to get too hot.

Jake, it is unstable with
19X187 (21X187)
1.376 Vcore (While not on load)
1.34VTT
1.68Dram

[laxrunner]

Originally Posted by falven

Jake, it is unstable with
19X187 (21X187)
1.376 Vcore (While not on load)
1.34VTT
1.68Dram

What is your dram frequency and QPI PLL voltage (voltages tab) in eleet?

[Jakethesnake011]

@laxrunner
Thanks I did not read those posts you had talked of before, but thanks for letting me know again, since I was lazy and did not read. And I do agree with the issue of his QPI voltage, it was my biggest problem in overclocking.

@falven
Whats your QPI voltage? try to keep it as close as possible to your Vcore voltage. Also your RAM might be a problem keep multipliers/ ratio of 2:8, which works well do not go 3:9 etc try to keep it 4 to 1. But anyways you have to play around with more settings. Try to see how high you can get your base clock on 1.376. Say put it down to 160, and then test, then put it up to 170 then test, and continue until you hit something you cannot get working. You also have to keep in mind with your QPI voltage, which is important.

[falven]

Keep in mind that on load I get different voltages.
I am totally stumped as to how you managed to get these settings stable on my system :O It passed the IntelBurnTest 5 loops so far!
Thanks so much for the help so far

Edit: Does not pass the IntelBurn Test Frequency 10

[45nm]

I decided to have some overclocking fun today (since it's raining). I changed the multiplier's from 24 (stock) to 31 and 30. Windows would show the loading screen on 31 and then the loading bar would be stuck at a certain point. Backed it down to 30 and no loading screen would show. Just a black screen. I was shooting for 4.1ghz but I didn't quite make it. I think I set the voltages too low (1.25vcore) and 1.2(vtt). I'm gonna try increments of 1 and see what happens.

[laxrunner]

Originally Posted by 45nm

I decided to have some overclocking fun today (since it's raining). I changed the multiplier's from 24 (stock) to 31 and 30. Windows would show the loading screen on 31 and then the loading bar would be stuck at a certain point. Backed it down to 30 and no loading screen would show. Just a black screen.

Yeah, you can't make giant jumps like that. Overclocking isn't exactly plug and go. Start off small and move up a bit at a time making sure it's stable along the way. Did you have an actual question?

[45nm]

Nope just reporting my findings thats all. I'm at 3.8 right now and stable. Going to see how I can push it further a bit later.