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Old 03-09-09, 10:59 AM   #61
Logical
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Default Re: Core i7 Overclocking thread

Finally got 4.0Ghz stable..temps never went above 80c on any of the cores. 20x200, HT Enabled.



4.2Ghz still working on this (fine tuning the voltages)..determined to get it stable with HT enabled...21x200



For 24/7 use i stick to my 3.6 profile, it runs flawless 100% stable at very low temps on my TRUE 120 and for everyday use and gaming i do not see any difference between this and the 4.0Ghz profile.

For me the 4.0 and 4.2 profiles are primarily for Benchmarking purposes.
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Old 03-09-09, 11:33 AM   #62
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Default Re: Core i7 Overclocking thread

Hmm. Intel don't say what the termal spec is on the support page. Anyone know what the max temp is?
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Old 03-09-09, 11:41 AM   #63
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Nice vcore there meth!
HOW LOW WILL IT GO
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Old 03-09-09, 08:24 PM   #64
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Default Re: Core i7 Overclocking thread

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Oh yes, it puts more stress on the North Bridge or in the I7's case the CPU. That's because the memory controller is on the CPU itself.
oh damn, i was hoping for like 12gigs on my next machine
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Old 03-10-09, 12:25 AM   #65
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Default Re: Core i7 Overclocking thread

I know overclocking will likely be affected with 6 sticks instead of 3, but with only 3 sticks it should OC the same with 1GB or 2GB sticks, so 3 x 2GB @ 1.65v is the way to go.

@ Revs, thermal spec on the cores is 100C. I've run my two hot cores up to 90C @ 4GHz w/ HT on and she was still stable. Apparently 100C is when it will shut down.
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Old 03-10-09, 02:00 AM   #66
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Default Re: Core i7 Overclocking thread

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Is the biggest factor the amount of RAM or does the number of sticks have an effect too? I'm wondering if I need more voltage on the QPI PLL to run 6 sticks.
The more slots you fill, the more it will affect the overclocking. It is true that 1Gb sticks do tend to overclock better than 2Gb sticks. But that doesn't make as big a difference as filling more slots.

Adding a bit more QPI/PLL voltage may help your stability problems. I'd give it a bit more juice and see how that goes.
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Old 03-10-09, 02:29 AM   #67
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Default Re: Core i7 Overclocking thread

Here's my voltages meth, the rest of my BIOS settings are like Jacob put in the guide, though I've of course got HT off. Not sure if there were any other settings you wanted to see.

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Old 03-10-09, 02:49 AM   #68
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thanks mang
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Old 03-10-09, 07:39 PM   #69
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Default Re: Core i7 Overclocking thread

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4GHz Stable 21 x 191 Turbo Mode enabled, HT enabled 1.36v in bios, temps never went above 81c on a TRUE 120 Black.

Ok, So I know enabling Turbo takes it to 21. But after enabling Turbo I can't key in 21 and leaving it at 20x200 with Turbo enabled still shows 4 GIG speed. What am i missing?

Below are my bios settings. I have it running stable at 4GHZ for a week.




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Old 03-10-09, 08:35 PM   #70
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Default Re: Core i7 Overclocking thread

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Ok, So I know enabling Turbo takes it to 21. But after enabling Turbo I can't key in 21 and leaving it at 20x200 with Turbo enabled still shows 4 GIG speed. What am i missing?

Below are my bios settings. I have it running stable at 4GHZ for a week.
Turbo mode is enabled only in the OS...so you wont see in the bios. Check out CPUZ it should say 4.2GHz 21x200.
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Old 03-12-09, 10:09 AM   #71
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Default Re: Core i7 Overclocking thread

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Turbo mode is enabled only in the OS...so you wont see in the bios. Check out CPUZ it should say 4.2GHz 21x200.
Ok thanks.
I am getting an urge to get it to work @ 4GHZ with HT On. Windows runs for a few minutes and bluescreens. Have tried messing with the voltages , pumped it up to 1.4 but still no luck.
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Old 03-13-09, 01:43 AM   #72
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Default Re: Core i7 Overclocking thread

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Ok thanks.
I am getting an urge to get it to work @ 4GHZ with HT On. Windows runs for a few minutes and bluescreens. Have tried messing with the voltages , pumped it up to 1.4 but still no luck.
With hyperthreading on, you will need more volts. I'd try around 1.45 - 1.5. That is the reason many don't enable it. Well that and very few applications use all 8 cores.
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