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i7 950 OC: Am I doing this right?

post #1 of 7
Thread Starter 
I'm rather new to overclocking, so based on what I've read around this forum and from Google, I tweaked my BIOS a bit to get some overclocking going. This is what I have so far:




I'm running Prime95 at the moment to test the stability, and it has been doing for an hour. How am I doing? The only things I've changed are the core voltage, multiplier and bclock.

Specs for the PC is in my sig.

EDIT: pics because they dont seem to be working:
http://imageshack.us/photo/my-images/59/oc31.png/
http://imageshack.us/photo/my-images/249/oc32.png/
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post #2 of 7
I would rather stay on the 60C but that's just me. Keep prime95 for a few more hours and see if it's still stable.
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post #3 of 7
Thread Starter 
I didn't turn turbo or HT off. Should I have done that?
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Lucy
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post #4 of 7
Leave HT on, unless you are gaming only.

Looks like a good voltage for that speed. You may want to try a different multiplier. Odd multipliers like 21 or 23 are noted to be more stable than even ones like the 22 you're using.

Also, what is your voltage in BIOS? are you getting any droop? If so, enable some LLC.
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post #5 of 7
i had to disable HT to get to 4.20Ghz from 4Ghz on air. only thing different i did was having to up the PPL/QPI volts... my MB had it at 1.25 stock and was causing BSODs out of the box
post #6 of 7
Thread Starter 
Quote:
Originally Posted by breenemeister View Post
Leave HT on, unless you are gaming only.

Looks like a good voltage for that speed. You may want to try a different multiplier. Odd multipliers like 21 or 23 are noted to be more stable than even ones like the 22 you're using.

Also, what is your voltage in BIOS? are you getting any droop? If so, enable some LLC.
I game a little, do some programming, watch some movies. I'm OCing for fun and to get some experience with it. I was under the impression that the default voltage is 1.2V for the stock clock of 3.06. This was why I thought I was doing something wrong because I lowered the voltage and increased the clock.

My voltage in the BIOS is 1.176V, I believe. I will check after a few more hours of Prime95 just to make sure.

With respect to droop or LLC, I don't really know what they are so I left them at what the default setting was (Auto for LLC, iirc). Should I be fiddling with them?

Quote:
Originally Posted by nazarein
i had to disable HT to get to 4.20Ghz from 4Ghz on air. only thing different i did was having to up the PPL/QPI volts... my MB had it at 1.25 stock and was causing BSODs out of the box
I'll get to 4.0 at some point. I figure if things are stable as of now, I should just leave it at this point. I'll probably make the push to 4.0 once I get a better grasp on how all this stuff works (along with memory OC). But until then, I won't be greedy.
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Lucy
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post #7 of 7
Quote:
Originally Posted by Sequences View Post
I game a little, do some programming, watch some movies. I'm OCing for fun and to get some experience with it. I was under the impression that the default voltage is 1.2V for the stock clock of 3.06. This was why I thought I was doing something wrong because I lowered the voltage and increased the clock.

My voltage in the BIOS is 1.176V, I believe. I will check after a few more hours of Prime95 just to make sure.

With respect to droop or LLC, I don't really know what they are so I left them at what the default setting was (Auto for LLC, iirc). Should I be fiddling with them?



I'll get to 4.0 at some point. I figure if things are stable as of now, I should just leave it at this point. I'll probably make the push to 4.0 once I get a better grasp on how all this stuff works (along with memory OC). But until then, I won't be greedy.
Default voltage is determined on a chip to chip basis. The default voltage for my 930 is 1.2125. This is what shows in BIOS when I have cpu voltage set to normal. Under load, it will drop. For example, if you're running prime 95 and check your voltage with realtemp, you may see voltage of 1.176 when your voltage is set to 1.2 in BIOS. That is droop of .024v. LLC levels will help keep this closer and keep you from BSODing or shutting down. I have mine set to level 1 out of 2. It essentially overvolts the chip just a bit while under load for stability purposes. Auto means no LLC is being applied at all. You'll probably need 1.25 (in BIOS) or maybe a bit more with LLC of some level enabled to hit 4.0 and have it be stable. It really depends on the chip though. I've found I can run 3.8 GHz very stable with stock voltage of 1.2125 with LLC enabled. If I drop voltage to 1.20625, it will fail after a few hours in Prime 95.
Edited by breenemeister - 10/29/11 at 4:04pm
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Black Sunshine II
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