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first time overclocking i7 920

C

CoolGuy90

Gawd
Joined
Oct 1, 2007
Messages
649
I want to overclock my 920 to just 3.0GHZ. I am completely new at overclocking CPU's. I read that simply increasing the BLK from 133 to 150 will get me to 3.0. What else if needed do I need to change?
 
CoolGuy90 said:
I want to overclock my 920 to just 3.0GHZ. I am completely new at overclocking CPU's. I read that simply increasing the BLK from 133 to 150 will get me to 3.0. What else if needed do I need to change?
Click to expand...

You might want to set a specific Vcore (say, to 1.25V) in order to stabilize your modest OC. The default (autodetected) Vcore setting is usually Auto, which might cause the voltages to drop very low. That destabilizes even a slight overclock, in my experience.
 
CoolGuy90 said:
I want to overclock my 920 to just 3.0GHZ. I am completely new at overclocking CPU's. I read that simply increasing the BLK from 133 to 150 will get me to 3.0. What else if needed do I need to change?
Click to expand...

This is a very simple and quick guide....http://www.evga.com/forums/tm.aspx?m=20028

This is very through and well done:http://www.evga.com/forums/tm.aspx?m=7528

It helps to fully understand what you are going to do and the effects before you do it......and potentially FUBAR the whole deal.

If you are only going to OC the CPU to that level....and you have a D0 stepping Ci7 920, you may only need to up the BClk as you noted.
I would simply try that first and stress the CPU with Orthos on all cores.....are you using Hyperthreading or turbo mode?

If it's stable under stress then you are done, if not you may need to raise your VCore by a small amount....example.....if your default is 1.21V raise it to 1.25V and retest.

What heatsink do you have for the CPU? What Motherboard do you use?what Memory?
 
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CoolGuy90 said:
I want to overclock my 920 to just 3.0GHZ. I am completely new at overclocking CPU's. I read that simply increasing the BLK from 133 to 150 will get me to 3.0. What else if needed do I need to change?
Click to expand...

Nothing at all. Just set BCLK to 150.

3.0 GHz should be very easy to get so you do not need to change any complicated settings which would be needed if you wanted to hit 4.0GHz.
 
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Thanks for the replies. I have a C0 stepping and a TRUE 120 with a Slipstream 800RPM w/ MX-2 thermal.

Where Do I check to see if I actually am at 3.0? For instance CPU-Z shows my CPU clock around 1.6GHZ due to the energy saving feature, so how would I know my true clock speed?

So far everything is on stock settings in the BIOS
 
I raised the BLK to 150, CPU-Z showed 3.1GHZ. Ran the IntelBurn test on Maximum with 16 threads and was succesfull, load temps where between 70-74 C.

Am I safe to keep it at this?
 
CoolGuy90 said:
I raised the BLK to 150, CPU-Z showed 3.1GHZ. Ran the IntelBurn test on Maximum with 16 threads and was succesfull, load temps where between 70-74 C.

Am I safe to keep it at this?
Click to expand...

Yup.
If you want a constant 3.0 GHz 24/7 simply turn off IntelSpeedStep in the BIOS.
I never use it, but that's just me. Some BIOS link turbo with SpeedStep.

The thing you want to remember, normal use,even games, will never push the CPU that hard, so your temps will always be lower.
 
magoo said:
Yup.
If you want a constant 3.0 GHz 24/7 simply turn off IntelSpeedStep in the BIOS.
I never use it, but that's just me. Some BIOS link turbo with SpeedStep.

The thing you want to remember, normal use,even games, will never push the CPU that hard, so your temps will always be lower.
Click to expand...

I might try turning it off, would you see any real world difference when not under load?

And yeah when I ran the burn test I knew that this would push the CPU really hard and if I do successfully pass it I know my temps wouldn't matter anymore since I rarely do anything that demanding.
 
I might try turning it off, would you see any real world difference when not under load?
Click to expand...

Well, I guess you'd have to see that for yourself.
I would guess a page would be faster to load at 3.0GHz than at 1.6?

Faster is faster,yes?
 
CoolGuy90 said:
I raised the BLK to 150, CPU-Z showed 3.1GHZ. Ran the IntelBurn test on Maximum with 16 threads and was succesfull, load temps where between 70-74 C.

Am I safe to keep it at this?
Click to expand...

Yes. The temps are fine especially when running IBT. 3.1GHz was probably due to Turbo Boost.
 
CoolGuy90 said:
I might try turning it off, would you see any real world difference when not under load?

And yeah when I ran the burn test I knew that this would push the CPU really hard and if I do successfully pass it I know my temps wouldn't matter anymore since I rarely do anything that demanding.
Click to expand...

no you won't notice any difference when you're not under load
 
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