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Need some help Overclocking my i7 930!

post #1 of 18
Thread Starter 
So i was out of the country for a while, and now that i am home, i get to play with my computer i bought about 2 weeks before i left town.

Any help or suggestions would be very well appreciated and REP plus awarded.

I am trying to get my rig to run stable at 4.0ghz. The processor is getting real hot real fast. From ~37c to 75c when in prime 95 running all 8 threads
Is there anything i am missing?

Here is what i am dealing with currently.
1. My voltage in windows is not close to my voltage in bios. I set voltage to 1.35 in bios and its 1.38 in windows and 1.41 ish under load

2. Should i set my cpu clock ratio to 22 or 20? With 20 i get 200x20 (4.0ghz) and 1600 memory (perfect) But on the 775 chips, the higher you set the multi, the easier it was on the heat ect.

With 20 multi and 1.35v
Current settings (IN BIOS)
EVGA VDROOP CONTROL (WITHOUT VDROOP)
CPU vcore (1.35)
vtt (+300)
cpu pll (auto)
Dimm Voltage (1.5)
qpi pll (1.4)
ioh (1.4)
IOH/ICH (1.65)
ich (1.25)
PWM (1067)

CPU Feature
speedstep disabled
Cx3 fucntion disabled
execute disable Disabled
Virgualization tech Disabled
Intel HT tech Enabled
Active processor cores ALL
Qpi control enabled
Qpi link fast mode enabled
qpi Frequency selection 4.800gts
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post #2 of 18
Thread Starter 
If i changed my Multiplier to a higher number, would that bring down stress on my cpu (heat) and allow for less voltage?
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post #3 of 18
They don't like even numbered multiplier, switch to 21, BCLK 200, CPU PLL to 1.98, DRAM voltage 1.65 I keep my RAM at below 1650mhz you might be able to go higher.
Edited by sgilmore62 - 1/1/11 at 4:41pm
    
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post #4 of 18
Try using an odd multiplier. I've heard that the i7s like them better in terms of stability so I don't know if you could get it stable at a lower voltage with an odd multi. Try like an x21 and a lower bclock. It's voltage that makes the heat after all (to keep it simple).

Also, try running through the frequencies from 3.6 to 4.0. The i7s tend to have a drop off point where the voltage to frequency increase gets horrible. If you are going for the 4.0 for the number's sake then that doesn't matter, but if you are going for performance you won't notice the jump from 3.8 to 4.0 (or at least I can't and I render). For example, my 930 gets to 3.6 on almost stock voltage, 3.8 around 1.25 and then takes up to 1.35+ for 4.0. For me the extra heat isn't worth the .4GHz.

In short, can't hurt to try to use the x21 multi.

EDIT: Ninja'd wile I wrote the Wall o'Text.
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post #5 of 18
Thread Starter 
why would i change my voltage to 1.65? That makes no sense? I am currently running under stock speeds with stock timings and my stock volt is 1.5
Also 200x21 would be 4.2ghz. This would also make me turn my volts up.
I would like to stay as close to 4.0 as possible, unless i can get 4.2ghz with low temps
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post #6 of 18
make your bclk 190.
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post #7 of 18
Your voltage is higher under load due to LLC(Load Line Calibration) being either on or set to auto.

I would try for the 200BCLK*20. What type of RAM are you using(model number)?
Are the memory timings all set at auto right now?
post #8 of 18
Thread Starter 
Quote:
Originally Posted by Shiggins View Post
Try using an odd multiplier. I've heard that the i7s like them better in terms of stability so I don't know if you could get it stable at a lower voltage with an odd multi. Try like an x21 and a lower bclock. It's voltage that makes the heat after all (to keep it simple).

Also, try running through the frequencies from 3.6 to 4.0. The i7s tend to have a drop off point where the voltage to frequency increase gets horrible. If you are going for the 4.0 for the number's sake then that doesn't matter, but if you are going for performance you won't notice the jump from 3.8 to 4.0 (or at least I can't and I render). For example, my 930 gets to 3.6 on almost stock voltage, 3.8 around 1.25 and then takes up to 1.35+ for 4.0. For me the extra heat isn't worth the .4GHz.

In short, can't hurt to try to use the x21 multi.

EDIT: Ninja'd wile I wrote the Wall o'Text.
Thanks for the input. I am also trying what you said. Right now I am putting 1.31v into 4018mhz (191x21)
I keep running stable in prime 95. I will keep decreasing volts till it errors. Maybe i have a good clocker!
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post #9 of 18
Thread Starter 
Quote:
Originally Posted by bavarianblessed View Post
Your voltage is higher under load due to LLC(Load Line Calibration) being either on or set to auto.

I would try for the 200BCLK*20. What type of RAM are you using(model number)?
Are the memory timings all set at auto right now?
Where do i find that LLC?

I am using G.Skill 1600 pi
http://www.newegg.com/Product/Produc...82E16820231335

The timings are set to 7-8-7-24- then all auto at 1.5 volts
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post #10 of 18
Quote:
Originally Posted by Dreko44 View Post
why would i change my voltage to 1.65? That makes no sense? I am currently running under stock speeds with stock timings and my stock volt is 1.5
Also 200x21 would be 4.2ghz. This would also make me turn my volts up.
I would like to stay as close to 4.0 as possible, unless i can get 4.2ghz with low temps
Oh, I assumed your RAM would overclock with higher BCLK and would need more voltage? I suggested higher BCLK because mine is 21x multiplier with 205 BCLK and my temps are ok.

    
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