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Old 07-28-09, 06:33 PM   #241
betterdan
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Default Re: Core i7 Overclocking thread

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Originally Posted by |MaguS| View Post
ok, im confused now... I raised my vcore to 1.3 since I became unstable at 3.8ghz during prime and cpuz nor does easytune show that change, both show 1.264.
You can probably thank VDroop. I don't have a I7 but when I set my mb to give 1.27 volts to keep it stable at 3.8 it would give it about 1.23 at idle and sometimes drop below 1.2 at load which caused it to not be stable under Prime or OSST. If you have load line calibration or something similar on your board you could enable it. I enabled it on my mb and it made it run stable. Now with the mb set to give the cpu 1.2564 volts it gives it about 1.23 at idle and 1.21 at load.

Again I don't have an I7 but maybe the VDroop problem is similar.
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Old 07-28-09, 07:42 PM   #242
|MaguS|
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Default Re: Core i7 Overclocking thread

Ok so I can't seem to get 4gz with (200x20 & 1.4vcore) but I'm 100% stable at 3,990MHz (190x19 /w Turbo & 1.375vcore). So weird...
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Old 07-28-09, 07:56 PM   #243
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Default Re: Core i7 Overclocking thread

Magus I see your board does have LLC (Load Line Calibration) try turning that on and see if it helps.
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Old 07-28-09, 08:15 PM   #244
|MaguS|
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Default Re: Core i7 Overclocking thread

Yeah have it enabled. Also disabled all the power saving options.
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Old 07-28-09, 08:19 PM   #245
betterdan
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Default Re: Core i7 Overclocking thread

Try turning Turbo off?
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Old 07-28-09, 08:24 PM   #246
|MaguS|
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Default Re: Core i7 Overclocking thread

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Originally Posted by betterdan View Post
Try turning Turbo off?
I had it off when I was at 20x but I was unstable... at 19x with it on im stable.


Last edited by |MaguS|; 07-15-11 at 04:54 PM.
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Old 07-28-09, 08:49 PM   #247
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Default Re: Core i7 Overclocking thread

Wow that still is a nice speed. Just curious can you run SuperPi 1M and see how much better it is than my Q9550 @3.8?
I got 12.230, I am betting you get about 10 or even below.
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Old 07-28-09, 09:29 PM   #248
|MaguS|
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Default Re: Core i7 Overclocking thread

10.4s
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Old 07-28-09, 09:39 PM   #249
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Default Re: Core i7 Overclocking thread

Thanks!
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Old 07-29-09, 01:46 PM   #250
|MaguS|
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Default Re: Core i7 Overclocking thread

SOB! My RAM is rated at 1333Mhz with 7,7,7,16. I can probably do better... thought I was limited to 1066Mhz. ><
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Old 07-29-09, 07:57 PM   #251
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Default Re: Core i7 Overclocking thread

So what did you do Magus?
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Old 07-29-09, 08:04 PM   #252
|MaguS|
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Default Re: Core i7 Overclocking thread

Haven't tried yet, Im too tired from work to bother. Will work on it tomorrow night.
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