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I7 930 overclocking question

Last response: in Overclocking
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February 21, 2011 12:12:31 AM

i am pretty experienced at overclocking but havent done it in a while so i have forgotten a detail or two ....

* i7 930 stock 2.66 oced currently to 3.8
* Evga x58 sli le board
* Corsair 12gb (3x 4gb) "2000mhz" = FOS (not able to get it 2000=corsair lies lol) tri channel kit
* Corsair Hydro 50 liquid cooler heatsink



Current Setup:

multipler is at: 19x
ram ratio is at 2:8
the core clock is in the 180's somewhere (not sure exactly need to check)

temps at 5 passes on very high with Intel burn test : 64c max

i would like to goto 4.0 or 4.2 or higher if possible ... i was wondering settings i should raise to get my clock higher/stable ?

thanks
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a b K Overclocking
February 21, 2011 12:56:33 AM

Either raise the multiplier (the max multiplier should be 21 or 22) or increase the BCLK. I have a feeling that raising the multiplier would be more likely to allow you to get above 4GHz. After a certain point the BCLK becomes increasingly difficult to raise, bumping up the multiplier should be easier.

BTW, what's the issue with the RAM, is it unstable, or did you just have problem finding the settings to make it run at 2000MHz?

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February 21, 2011 1:10:42 AM

no i called corsair and they said its really not possible .... idk ... and my question is not about the multipler more about voltage settings ..... the core clock and multiplier i know how to do that. i just was curious of what voltage settings i should raise to pull a stable 4.0
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February 21, 2011 1:15:40 AM

If your RAM isn't going to run 2000MHz you could try tightening the timings to get your money's worth, that would give you a little bit of a boost.

What are your current voltages?
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February 21, 2011 1:27:21 AM

i raised all voltages 1 setting above stock.... and have a working/stable 3.8 but when i goto 4.0 or 4.2 it will post but freeze and bsod windows load ... all ram timings are set and everything.... i was just curious as to what voltages i should try .... i may have to mess with and see what i can get ... i just was hoping for a starting point i guess ....
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February 21, 2011 1:33:33 AM

1 what? up .1v? .01v? What voltages does your BIOS show?
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February 21, 2011 1:39:59 AM

heres what i did .... turn off vdroop ... then went through all the settings for example if the stock was 1.175 and in the scroll tab the next setting its 1.180 . I would have set it 1.180 . i went into each voltage setting and raised the voltage 1 setting higher for each. If that makes any sense
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a b K Overclocking
February 21, 2011 1:52:28 AM

Ok, I would start by increasing the Vcore up to about 1.22v and work up from there. 1.18 is too low for a 4.0GHz overclock. Set your clock speed to 4GHz and Vcore to 1.22v and run Prime95 and see if your CPU is stable, if it isn't increase by Vcore by .02v to 1.24v, if your CPU isn't stable just keep bumping up voltage by .02v until Prime95 can run for 2 hours without an error. Just try to stay under 1.36v Vcore. What do you have Vcc at? It may also need to be increased.
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February 21, 2011 2:15:59 AM

Try setting VTT at +100, that will bring it to 1.2v (1.1v stock + 100mV for a final voltage of 1.2v). Keep in mind that VTT voltage must be kept within .5v of VDIMM.

Here's a good guide on EVGA motherboard voltage settings: voltage guide.
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February 21, 2011 2:31:11 AM

great thanks man ill try that should i need to raise the cpu vcore ? pll vcore ? or vtt voltage ?
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a c 148 K Overclocking
February 21, 2011 2:34:13 AM

rollaballinc said:

* i7 930 stock 2.66 oced currently to 3.8
* Evga x58 sli le board
* Corsair 12gb (3x 4gb) "2000mhz" = FOS (not able to get it 2000=corsair lies lol) tri channel kit
* Corsair Hydro 50 liquid cooler heatsink

multipler is at: 19x
ram ratio is at 2:8
the core clock is in the 180's somewhere (not sure exactly need to check)



Something doesn't jive:

If you're at 3.8 GHz, with a multiplier of 19, then by definition, your BCLK must be 200 (turbo disabled)

200 x 19 = 3.8 GHz

With the Turbo boost enabled it would have to be 190 as

190 x (19+1) = 3.8 GHz

As for temps, 5 passes is really inadequate.

As you get higher, temperature may become an issue ..... the H50 will get you temps about 5C hotter than the 1st tier air coolers.

Turning off Speed Step, HT and Tubo are techniques ,many peeps use to make things more stable
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February 21, 2011 2:50:27 AM

tryed raising the vtt to 100 no luck ..... i have stable 3.8 i just need to figure out exactly what i need to raise ...and the H50 will get you temps about 5C hotter than the 1st tier air coolers ?????? I have 64c max temps as of now .... the temps arent my issue .... its finding the sequence in the voltages
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Best solution

a b à CPUs
a b K Overclocking
February 21, 2011 3:09:36 AM

Jack: turbo boost is off in the photos. As is HT and SpeedStep.

Have you tried 1.22v Vcore yet? If so and it's still not stable raise Vtt slightly to around +125mv and raise Vcore another bump to 1.24v. See if that helps. If it doesn't just raise Vcore another .02v and see if that allows for a stable OC. Keep in mind that these voltage increases are going to raise temps, so you'll need to keep an eye on those.

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February 21, 2011 3:22:14 AM

yeah i always do 5 passes on very high on Intel Prime before leaving the settings ... and leave evga eleete tool open watching the temps while it does it ... ill try what you had mentioned ....
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February 21, 2011 3:28:59 AM

Best answer selected by rollaballinc.
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February 21, 2011 3:29:02 AM

ok i raised it to 1.20 and vtt to 100 and it brought me in now i am gunna test and if it is stable ill take it higher in the 5.0 or 6.0 until my processor fries :)  jk seriously thanks man you a life saver
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February 21, 2011 3:43:46 AM

i had to take it up to 1.22 as you suggested and on a high stress test it peaked at 80c which is a bit high for my taste but idle is mid 40c's . will i be able to raise the core clock with out raising the vtt or vcore do u think ? i am gunna do a super high test first and if that passes i am gunna shoot for 4.2 or even 4.5 but probly 4.2
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February 21, 2011 1:17:26 PM

You'll just have to try raising the core clock and see if it's still stable. If it isn't stable just add a little more Vcore. I personally wouldn't push it much higher than 4GHz because your temps are starting to get too high to go much farther. 4GHz is a pretty impressive overclock considering that you bought a 2.8GHz CPU. That's a 40% overclock. Gotta love these i7-i5 processors. :) 
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February 21, 2011 1:21:32 PM

yeah definatly ... i think that i put too much thermal paste on my cpu and i am going to remove and reapply next week ... i have heard this makes the processor run hotter
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