i7 4.0 ??

InfernoUk

InfernoUk

InfernoUk

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684
Hey ive overclocked my i7 920 to 3.8 with no issues and good temps stable without chaning voltages.
Ive not really overclocked before this and i wanted to get 4.0 stable and leave it there but i was wondering can this been achieved on an air cooled system with an Asus trition cpu cooler over the stock one, im using an asus p6t mobo and 3x1gig dominator.
Anyone who can let me know if this is achievabe and/or has the settings to let me try then that would be great as i know i have to change the voltage but im not sure if thats all. Thanks for your time.
 
yeah there was a warning sticker on it but if i can get 3.8 without voltage change i assumed 4.0 would be ok wit just a small boost. a 920 and an asus p6t is a fairly common config so i guess someone wil know exactally. ive never messed with voltage before though so i dont want to fry the chip even though ive read a lot about it all
 
its stable at 3.8 as ive had it running 2 weeks with games and encoding with no issues, tested with prime 95 i think it was called for 10 hours with no issues. was around 40 idle and 50-60 underload i think i cant remeber the exact number for that.
 
60C load on air is very good indeed. You should have loads left in it. Just a bit more voltage and up the BCLK should be all you need. Keep an eye on the load temps with Realtemp 2.90 (only accurate one) with large ffts anything under 80C and you're good.
 
ok how much do i change voltage and base clock per time? ive never messed with voltage before. also does ram frequency matter? mine underclocked as bios is set back to basic.

edit: i dotn spose you could give me exact number i need to change to try a 4.0? or does it vary from person to person and i can just post my temps to see
 
i just tried 20x200 and left voltage on auto it booted into windows then when i ran 3d mark it crashed out and wouldnt boot into windows again, im guessing this is down to the voltage.

Is it just the core voltage i adject? and whats a reasonable number to try if its auto at the moment and stably running at 3.8.

Also do the ram settings need any changes all ive done is change the mhz to 1601 after setting the 20x200.

Thanks for any help to fix this
 
sorry for posting again heres a couple of images to help.

This image is of my unstable 4.0 it crashes out after a few mins not even underload i know this is because ive missed some settings but dont know which.



Heres my current so far stable of 3.8 and if you look at highest temp thats underload, is this all ok?



Thanks for the help
 
Couple of things, Realtemp 2.70 under reads by 5C. 2.90 is the one to use. Going by that you're actually already getting on for 85C. Its up to you if you want to go higher I wouldn't on mine. Secondly you already have quite a lot of vcore. If you have that one on Auto then its putting quite a bit through there, again you may have to add even more to get 4Ghz stable. Which might be more than you want to push it 24/7.

First thing to try dropping the multi to 19 with a higher BCLK, you may find as many have that its more stable. Also give us a list of all the voltages you're using, if they're Auto find out what they are and set them the same but manually. Auto volts can be very dangerous, they often scale with frequency to high levels.
 
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all voltages are auto, what should i drop the base clock to and raise the other by? after running 2.70 for an hour with prime 95 on highest temp reached on there is 94 so if it out reads by 5 then 99 highest : /

what do i need to do to keep 3.8 as stable as possible then as 4 will be to far on my current cooling i think or is 3.8 also to far?

edit: that 99 is very high for some reason though, i never really see it over 75 most of the time
 
might be a bit of a stupid question but where in the bios is the multiplyers settings i can only see base clock, i changed the core voltage down to whats in the image, what should i up it to support 4.0 if i try that 19x211 ??

 
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Hopefully with 1.4+ 211x19 should be stable. As I said show me the voltages and I can tell you what to adjust. I'll have a look for some screen shots of the multi, should be obvious though.

EDIT: Ah got it, on the P6T its "CPU Ratio Setting"
 
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all voltages are auto so there isnt much to show, also you cant print screen the bios can you ?? basically all thats changed now is base clock and vcore and ram frequency nothing else from standard

ok ill change multiplyer to 19 and bclock to 211 and see if it boots and stays online, just finishing the new test of 10mins with the new temp programme ill post image in a sec
 
InfernoUk said:
all voltages are auto so there isnt much to show, also you cant print screen the bios can you ?? basically all thats changed now is base clock and vcore and ram frequency nothing else from standard
Click to expand...

For starters keep the VTT (QPI/DRAM core voltage) 0.25v below the Vcore. Try to get most of the voltage on manual settings, Auto voltages can be lethal.
 
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