i7 2600k OCing assistance needed.

Munchy

Munchy

Munchy

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26 Feb 2013
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Hi guys. I'm brand new to the forum and overclocking in general and I'm looking for advice on my CPU's overclocking potential. I'll list my specs and then discuss what I've found so far.

Motherboard: Asus Sabertooth Z77
CPU: i7 2600k (obviously) w/ Corsair H80 cooler.
RAM: 2x4GB Corsair Vengeance

If any other specs are required please let me know.

So far I've been able to overclock to 4.4GHz with a VCore of 1.2v. Trying 4.5GHz at that voltage would freeze the OS in its tracks. I then learned that increasing the voltage can help you go further. I tried 1.3v @ 4.4GHz and it seemed stable. I tried to take it to 4.5GHz and upon trying to load anything I'd be met with a bluescreen that produces the message "whea_uncorrectable_error", or something along the lines. At this point I don't exactly know where to go. I tired turning it back down to [email protected] but the same bluescreen would pop at seemingly random times. Is my CPU only going to be able to peak at 4.4 on 1.2v? What should I be doing with my voltage? I feel like I'm not doing something correctly.

Like I said, I don't know a lot about the whole process and any needed advice would be greatly appreciated!
 
Hi munchy. Happy to offer some advice that was parted to me.
Sounds like your heading in right direction. I believe ive seen some sandybridge cpu do 4.7~4.8 on vcore of 1.38. Not all chips are capable of such feats so dont beat yourself up if its not possible.

4.5 sounds like a decent target. Typically, you change multiplier and adjust vcore.
Continue with stress testing, keeping eye on temps (under 80c) and volts (under 1.38).
Often recommended to turn off tubro boost and energy saving features like cstates.
Slightly more advanced option is to use LLC (i use HIGH on my gigabyte board).
This helps stabilize volts at load.

There are some other options but stick to that for time being. The whea errors/BSOD are typical of vcore deficiencies. Need to add an increment and retest. Stress for at least 15-30mins the higher you go.
Once settled on your ideal OC, consider re-stressing for up to 12hrs or alternatively just use your pc as usually would and see how it goes.
Avoid OC your ram until sorting the cpu out.
 
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Rubicant said:
Hi munchy. Happy to offer some advice that was parted to me.
Sounds like your heading in right direction. I believe ive seen some sandybridge cpu do 4.7~4.8 on vcore of 1.38. Not all chips are capable of such feats so dont beat yourself up if its not possible.

4.5 sounds like a decent target. Typically, you change multiplier and adjust vcore.
Continue with stress testing, keeping eye on temps (under 80c) and volts (under 1.38).
Often recommended to turn off tubro boost and energy saving features like cstates.
Slightly more advanced option is to use LLC (i use HIGH on my gigabyte board).
This helps stabilize volts at load.

There are some other options but stick to that for time being. The whea errors/BSOD
are typical of vcore deficiencies. Need to add an increment and retest. Avoid OC
your ram until sorting the cpu out.
Click to expand...

I'll keep this in mind for tomorrow morning when I first get the chance to try it. So, if I'm reading it right, the whea errors are caused by a lower than necessary VCore value? If this is so I do not understand why the OS freezes when VCore is even lower on the same value? I figured as it is a different type of crash there was a different reason, which led me to believe that the VCore was somehow too high, although I know it can go higher safely.
 
im at 4.5ghz with my 2600k and z68 v pro,should be similar

ill have to look in the bios and post my settings,cant remember them off hand

1.344v I need
 
Rubicant said:
What are you using to stress test your OC and how long? Its possible that 4.4ghz was never truly stable at 1.2v.
Click to expand...

I've never done a proper stress test. I've downloaded Prime95 I've just not ran it yet. I said stable but I just meant at those settings it's not crashed once before. If you've any tips for how to run the best test ill give it a run for a couple of hours tomorrow.
 
to stress do 5 runs on maximum in intel burn test,do keep a close eye on core temps and stop the test if they go above 80c

if it passes then you can test longer in prime 95 blend test but its pretty stable if it passes ibt

if you get a bsod the error code 124 error usually means not enough cpu or imc voltage

101 error is not enough cpu voltage
 
How much RAM do you have? 2 sticks or 4? You may need to bump your RAM voltage up from 1.5V if you have 4 sticks yo 1.55V/1.6V can help with stability sometimes. I have my 2600k @ 4.5Ghz with 1.34V I think for my vcore LLC set to 1. Can't remember much else with out going into my BIOS atm :p hope it helps! Take the vcore up slowly no need to over do it. If it BSOD's then up the vcore by 0.05V I think it is or the smallest step your board allows.
 
Munchy said:
I was looking into the errors list but when I checked I couldn't find the error codes. Ill try again in the morning.
Click to expand...

It wasnt obvious to me initially but those codes are followed by a series of "0s"
e.g 0x0000000000000000124, etc. Something to keep in mind.

And yes check back tomorrow because there may be more advice here that is specific to your motherboard. Better to have all the information before proceeding.

Like wazza said, check out intel burn test or prime95. Some people here also just advocate playing games or whatever you usually do when on windows.
 
Rubicant said:
It wasnt obvious to me initially but those codes are followed by a series of "0s"
e.g 0x0000000000000000124, etc. Something to keep in mind.

And yes check back tomorrow because there may be more advice here that is specific to your motherboard. Better to have all the information before proceeding.

Like wazza said, check out intel burn test or prime95. Some people here also just advocate playing games or whatever you usually do when on windows.
Click to expand...

I'll run the Intel burn test first. I'm currently at 4.4GHz and 1.2v.
 
wazza300 said:
to stress do 5 runs on maximum in intel burn test,do keep a close eye on core temps and stop the test if they go above 80c

if it passes then you can test longer in prime 95 blend test but its pretty stable if it passes ibt

if you get a bsod the error code 124 error usually means not enough cpu or imc voltage

101 error is not enough cpu voltage
Click to expand...

Here are my results after 5 tests. The temperature did not reach or exceed 55c.
http://gyazo.com/7876a80fa981cf386e866d660e76140e
 
Great. Now try 4.5 but crank up the volts to 1.3 again. I know you said it wasnt stable but retest and see. Depeding on what happens, you can add vcore (+0.02) if its unstable, or try to reduce it (0.01) if theres no BSOD. Your trying to achieve optimum volts for your OC without errors. keep temps under 75-80c, vcore under 1.38.

p.s. cpuz is useful program. It shows your cpu frequency and vcore, amongst other things.
 
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Rubicant said:
Great. Now try 4.5 but crank up the volts to 1.3 again. I know you said it wasnt stable but retest and see. Depeding on what happens, you can add vcore (+0.02) if its unstable, or try to reduce it (0.01) if theres no BSOD. Your trying to achieve optimum volts for your OC without errors. keep temps under 75-80c, vcore under 1.38.

p.s. cpuz is useful program. It shows your cpu frequency and vcore, amongst other things.
Click to expand...

I have been using CPU-Z to monitor those things.
 
im using offset cpu voltage,+0.020v the cpu clocks down at idle/full speed at load

heres my settings it might help you,enter your own ram speed/timings though as mine are different

bexv.jpg

b3mv54.jpg

b6akhd.jpg

everything else is fine on auto
 
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Rubicant said:
Great. Now try 4.5 but crank up the volts to 1.3 again. I know you said it wasnt stable but retest and see. Depeding on what happens, you can add vcore (+0.02) if its unstable, or try to reduce it (0.01) if theres no BSOD. Your trying to achieve optimum volts for your OC without errors. keep temps under 75-80c, vcore under 1.38.

p.s. cpuz is useful program. It shows your cpu frequency and vcore, amongst other things.
Click to expand...

Here are my results for 4.5GHz and 1.3v: http://gyazo.com/34ed64f7fbda755faca232f84f72eef0

I put the voltage at 1.3 and throughout the test the voltage was frozen at a value at above 1.30. It is currently reaching 1.4v though, and I don't know why.

Also, you'll note that the temps at maximum did reach 77c. I was running my H80 on it's slowest setting at the beginning of the test (first 1-2 runs). After the temps crossed 75c+ I popped open the side panel and turned them to full. Throughout the tests following I noticed a highest temp of 73c and the average was around 68-72c.
 
its for vdroop,when under full cpu stress the voltage of the cpu will droop a little,so you enter 1.4v and it uses 1.35v under stress the missing voltage is due to vdroop and loadline calibration helps prevent this

thats why your cpu is shooting up to 1.4v when not stressed,either lower your cpu voltage or use one level lower llc

try the setting i posted as offset voltage is the best imo,mine uses less that 1v at idle and 1.34v at 4.5ghz full load
 
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