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2600k OCing

post #1 of 8
Thread Starter 
Just got my new system and I'm jumping right into the OCing, but would like a little clarification on a few things before I push it too high. Right now I'm stressing it with prime sitting at 4.6GHz with 1.35v in BIOS (Just BSOD'ed with 4.7GHZ after about 30min of prime). I've been looking up the options as much as I could but still don't know exactly what they all do or the consequences of turning them up too high. Looking at people with similar setups, this is what I've changed so far:

Internal PLL Overvoltage - Enabled (was disabled)
LLC - Ultra High (75%) (was 0%)
VRM Freq. - 350 (was auto which is I think 300)
Phase Control - Extreme (was Standard)
Duty Control - Extreme (was T.Probe)
CPU Voltage - 1.35v
CPU PLL - 1.75v
CPU Spread Spectrum - Disabled (was Auto)

I also turned off C-States and Speedstep and keeping RAM at stock speeds and timings for now.

Temps between cores are pretty far apart. In order of core they are around 56, 65, 65, 58. Not sure if this is normal.

The problem with me changing these options is I don't know what most of them do or was their max settings are. I also can't seem to find what the max safe voltage is for this processor, looking it up I've seen people say anything from 1.4v to 1.52v

Thanks for any help explaining the above settings and what they should be safely set to.
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post #2 of 8
when u switch on LLC make sure how much u r voltage increases at load using CPU z

make sure u keep it below 1.5V .
but if u can get 1,35V 4.6 ghz its good .
the voltage in bios and wht the processor get can b different ?

and the temp is normal .. usally middle to core are pretty high nothing to worry all cool
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post #3 of 8
Thread Starter 
At idle CPU-Z says 1.328v-1.336v

Under 100% load it says 1.320v-1.328v, haven't seen any spikes so far.
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post #4 of 8
http://www.clunk.org.uk/forums/overc...beginners.html

That's the guide I read for Ocing my 2600k. I went in knowing nothing about overclocking an Intel chip. It was the easiest thing ever. Since we have the same board, you can follow step-by-step and assure you're following it correctly.

Gives you a lot of nice tips about basically everything, including your memory after you find your 24/7 stable overclock.

As far as your temps question goes, mine does the same thing, except yours is a little more drastic. That's most likely from a poor seating of your heatsink. A re-apply of your TIM and making sure it's perfectly seated should stabilize your temperatures.

I recommend for TIM method you use a grain of uncooked rice. I've always seen that method giving best cooling results.
Edited by pjBSOD - 3/27/11 at 11:31am
post #5 of 8
Thread Starter 
Quote:
Originally Posted by E-Peen;12890519 
http://www.clunk.org.uk/forums/overclocking/39184-p67-sandy-bridge-overclocking-guide-beginners.html

That's the guide I read for Ocing my 2600k. I went in knowing nothing about overclocking an Intel chip. It was the easiest thing ever. Since we have the same board, you can follow step-by-step and assure you're following it correctly.

Gives you a lot of nice tips about basically everything, including your memory after you find your 24/7 stable overclock.

Just what I was looking for, reading now.
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post #6 of 8
Quote:
Originally Posted by Jacko87 View Post
Just what I was looking for, reading now.
You won't be disappointed. I found a lot of guides that were lackluster on information, or sometimes had way too much information that wasn't good for beginners to read from.

That guide is perfect, he explained every step almost to the T. I even like how he included pictures in every step.

Good luck

I'll be around if you have any more questions.
post #7 of 8
1.32V for 4.6 ghz is decent
good luck enjoy
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post #8 of 8
You do not need Internal PLL Overvoltage enabled at that OC. Generally only needed for 4.8-5.0+ and more so only 5.0+ just depends on your chip.

Follow the settings in this guide for his suggestions of the 4.8 OC, i personally leave speed-step enabled, anything below 5Ghz it doesn't affect stability and even then its debatable.

http://hardforum.com/showthread.php?t=1578110

The only thing i have different for my 4.5 OC is disabled C states and CPU PLL Overvoltage disabled and i am stable as a rock, with the settings mentioned in the guide.
I am still testing the lowest voltage i can run 4.5 at , i started my way down from 1.4v and currently at 1.370, i drop down a voltage notch each time i pass a successful run at prime95 for 5 hours. Once i find a voltage drop that does not pass that 5 hour mark i will use the last stable one and stress it in prime for at least 10-12 hours to find 24/7 stability.

Some people like testing for longer but 10-12 hours has never failed me when seeking a 24/7 stability. Overshooting the voltage and working your way down has always worked well for me.


Here is also a link to my work-log/build log i have for my 2600k/saber-tooth combo there is screen shots of my bios settings etc.

http://www.overclock.net/intel-mothe...t-me-some.html

I think this will help you seeing as we have similar OCs.
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