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Need help overclocking 3770K with Asus P8Z77-V mobo

post #1 of 40
Thread Starter 
Hello,

This is my first time OCing. I've read a few guides and forum posts, so I kind of get the general idea of OC. I want to try to OC to 4500 (or lower if temps are too high). Most of the guides I've read just state the meaning of each term and sometimes give recommendation values, but never goes into details on what to do step by step.

So can anyone please go through the steps of how to overclock for manual voltage for now (will eventually do offset voltage later on)? And what to change if the OC fail (BSOD, freezes, etc.)? I just need the general gist, so I have somewhere to start. Thanks.

Btw, my PC spec is in my sig.
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post #2 of 40
If it's your first time OCing, do what I did...start off small like around 4.3 or so and get that stable, then as you get comfortable you can go higher. I did manual VCore settings initially, but I'm going to play with offset to see how that works out.
post #3 of 40
Thread Starter 
Besides setting the multiplier, LLC, etc....

Do you just pick a reasonable vcore value and then test stability (prime95) + temps? If it fails, you increase/decrease vcore and test stability again? Rinse and repeat?
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post #4 of 40
Pretty much! Just start with the multiplier first, probably 42 at stock volts, then if that's stable move it up and shoot the VCore up a bit higher than you think you'll need. Test, if it's stable, you can try to lower the VCore by .005 increments. Test for stability at each increment and you'll find the right one. Rinse repeat as you go higher in multipliers. If you want to try your hand at offsets, look at the thread I made today asking about it. Some good info on there if you already understand the theory behind it.
post #5 of 40
Thread Starter 
Quote:
Originally Posted by Nihilo View Post

Pretty much! Just start with the multiplier first, probably 42 at stock volts, then if that's stable move it up and shoot the VCore up a bit higher than you think you'll need. Test, if it's stable, you can try to lower the VCore by .005 increments. Test for stability at each increment and you'll find the right one. Rinse repeat as you go higher in multipliers. If you want to try your hand at offsets, look at the thread I made today asking about it. Some good info on there if you already understand the theory behind it.
Thanks for the info. How long do you usually test a certain freq or vcore to see if it's stable? (ie. At 4200 stock volt, how long did you test prime95 (or IBT or ??) and what settings (blend or custom?) ?

Btw, I will definitely have a look at your offset thread once I get a stable manual voltage OC.
Edited by Teiji - 5/9/12 at 2:03pm
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post #6 of 40
Run prime95 blend or custom for at least an hour or 2. Some people say 12 hours for a full stability test. Also, have cpu-z and real temp up while doing this. cpu-z will display your Vcore so you can see how much Vdroop you're getting (if its a lot, raise LLC), and realtemp will show you your temps.
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post #7 of 40
Quote:
Originally Posted by bgineng View Post

Run prime95 blend or custom for at least an hour or 2. Some people say 12 hours for a full stability test. Also, have cpu-z and real temp up while doing this. cpu-z will display your Vcore so you can see how much Vdroop you're getting (if its a lot, raise LLC), and realtemp will show you your temps.

+1. Like he said, 2 hours should be a good short run to test stability...I had many fails before then while trying to find the right voltage. If you can pass 2-3 hours, do a blend run for overnight while you sleep. If it crashes, it's not completely stable. Also, try running IBT at 20 passes on standard before you do the Prime95 short run. If it passes, then move to Prime95. OCCT is another good one, but it's kind of like running IBT so not a big deal.
post #8 of 40
Well Teiji I have a similar setup to yours being that we have the same Mobo and CPU. Here is what I got. I started out using all auto settings in the Bios but setting the core multipliers to 42. This gave me a 4.2 ghz speed but it did so at 1.25 v core which was kinda high but usable. Moving t0 4.3 would make the vcore go to over 1.30 and temps seemed to rise a bit to much for my liking.

After reading the overclocking guide http://www.overclock.net/t/1247413/ivy-bridge-overclocking-guide-with-ln2-guide-at-the-end I Looked at the chart and planed out the voltage path and where I wanted to be. In the bios I changed to manuel settings and started off with a multiplier of 43 at 1.200 vcore and tested under ITB (Intel Burn test) and than moved it up to 44. It failed IBT. I bumped up the votlage to 1.210 and it passed IBT but failed Prime95 within 15 mins. So bumped it up to 1.220 and it was stable under prime after 1 hr 46 mins. I left all of the other setting alone and on Auto.

338

The temps weren't bad but with IBT test they did go up to 81 C which is tolerable. Only thing is I forgot to fix my Memory speeds after I changed to Manuel the first time. The minimum temp on the pic is not right as I reset the temp gauge during the test since it had data from IBT.

Yes I rambled a bit but I am a first time overclocker but long time reader and lurker. Give me a break.

If you have any questions I will try to answer.
Edited by Harkster - 5/9/12 at 6:10pm
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post #9 of 40
Thread Starter 
Harkster, you didn't change the LLC at all? (So it's still at Auto?).

I have just tested 4300 at 1.2 vcore and almost everything else at default like Harkster (with the exception of XMP profile 1). I ran IBT 20 times at very high. It did 20 of 20 completed, but stop responding after that (no success message popping up, flame icon stop moving), so would I consider that a failure or success? Also, RealTemp froze like 10min into the IBT with temp of 72-78C, so I don't know if those are totally reliable temps throughout the test. Gradually, all the windows I click/move begin to freeze too, so I had to press the Reset button on my case.

Edit: I also ran prime95 with the same settings as above. After around 30min (same time as IBT finished 20 of 20 above), the CPU goes back to idle with no message of success or anything, and all windows slowly freeze as I click/move. Does this mean it's not stable and I need to increase more vcore?
Edited by Teiji - 5/9/12 at 9:34pm
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post #10 of 40
Quote:
Originally Posted by Harkster View Post

Well Teiji I have a similar setup to yours being that we have the same Mobo and CPU. Here is what I got. I started out using all auto settings in the Bios but setting the core multipliers to 42. This gave me a 4.2 ghz speed but it did so at 1.25 v core which was kinda high but usable. Moving t0 4.3 would make the vcore go to over 1.30 and temps seemed to rise a bit to much for my liking.
After reading the overclocking guide http://www.overclock.net/t/1247413/ivy-bridge-overclocking-guide-with-ln2-guide-at-the-end I Looked at the chart and planed out the voltage path and where I wanted to be. In the bios I changed to manuel settings and started off with a multiplier of 43 at 1.200 vcore and tested under ITB (Intel Burn test) and than moved it up to 44. It failed IBT. I bumped up the votlage to 1.210 and it passed IBT but failed Prime95 within 15 mins. So bumped it up to 1.220 and it was stable under prime after 1 hr 46 mins. I left all of the other setting alone and on Auto.
338
The temps weren't bad but with IBT test they did go up to 81 C which is tolerable. Only thing is I forgot to fix my Memory speeds after I changed to Manuel the first time. The minimum temp on the pic is not right as I reset the temp gauge during the test since it had data from IBT.
Yes I rambled a bit but I am a first time overclocker but long time reader and lurker. Give me a break.
If you have any questions I will try to answer.

You could easily lower your VCore at those speed...here's a pic of my first stress test so far at this clock and VCore. I'm using offset of +.005 and LLC at 50% and PLL at 1.6

This is after the test finished

338

This is a quick run to show the load and VCore

338

I'll do a Prime95 Blend test while sleeping tonight to make sure it is stable, but that's a pretty good indicator
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