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Complete Overclocking Guide: Sandy Bridge & Ivy Bridge | *ASRock Edition* - Page 172

Poll Results: Was this guide helpful?

Poll expired: Oct 17, 2012  
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    Yes (and I DO have an ASRock motherboard).
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post #1711 of 9487
@notyetready... From your last screen shot, you're "not yet stable". It looks like each worker on the 2600k is throwing errors in prime blend?

@lucky will be very helpful. He and the OP helped me understand how to get my 2700k stable at 47x and 48x which seem to be multipliers for my chip that required playing with more than Vcore and turbo offset.

Keep your memory at 1600 while reaching stability on the CPU. Then focus on the memory and vtt. I found that cpu pll was key above 46x, but unfortunately there does not seem to be a systematic way to tweak PLL... Empirical, trial and error! But lowering it from auto helped with stability and temps.

With watercooling, I run the 2700 at +0.110 offset and +0.012 turbo at 47x with excellent stability @ 1.36-1.37 during blend. Lowered PLL one notch - temps stay under 65 on the hottest core.

It is scary that windows will pop Vcore to 1,414 volts while using my 47x settings (LLC level 2)(catch it with Open hardware monitor "max Vcore). Anyone else see this Vcore spike thing?

OCer in training!
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post #1712 of 9487
^ I know I'm not stable yet. I was until I amped the memory up to 2133. Once I make a few changes I should be good to go.
    
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post #1713 of 9487
Quote:
Originally Posted by Jpmboy View Post

@notyetready... From your last screen shot, you're "not yet stable". It looks like each worker on the 2600k is throwing errors in prime blend?
@lucky will be very helpful. He and the OP helped me understand how to get my 2700k stable at 47x and 48x which seem to be multipliers for my chip that required playing with more than Vcore and turbo offset.
Keep your memory at 1600 while reaching stability on the CPU. Then focus on the memory and vtt. I found that cpu pll was key above 46x, but unfortunately there does not seem to be a systematic way to tweak PLL... Empirical, trial and error! But lowering it from auto helped with stability and temps.
With watercooling, I run the 2700 at +0.110 offset and +0.012 turbo at 47x with excellent stability @ 1.36-1.37 during blend. Lowered PLL one notch - temps stay under 65 on the hottest core.
It is scary that windows will pop Vcore to 1,414 volts while using my 47x settings (LLC level 2)(catch it with Open hardware monitor "max Vcore). Anyone else see this Vcore spike thing?
OCer in training!

Yea even though my vcore is 1.32v - 1.328v in bios w/ LLC level 3, hardware monitor will show spikes of 1.35v. Its normal from what i understand because its only for a second then the vcore readjusts to the correct voltage.
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post #1714 of 9487
Quote:
Originally Posted by zamdam View Post

Since i am at 4.5 and my turbo voltage is at the .004 and the offset is at .030, does that mean i have a good chip since its prime and game stable with temps not going above 60c? I wouldnt mind trying for something higher, but i dont think it will yield that much more vs 4.5... like if i went to 4.8, i dont think that would give me that many more fps for the amount of heat it would be generating..


Well if you're happy with 4.5 then you don't have to go any higher. Honestly getting the max overclock is just more of a hobby (or addiction? lol). For me if I can squeeze out every last drop of MHz why wouldn't I right? But I am more for stability than high clocks. Meaning I'd take 4.7GHz 24/7 than say 5GHz with BSODs every week. I admit I do wanna try 4.8 when I have the time..Playing to many games right now and it takes awhile to achieve stable clocks..

Your chip seems good, mine went to 4.5 at stock everything, just increased multiplier, so I'd say yours can PROBABLY reach 4.7-4.8GHz with enough patience and tweaking..
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post #1715 of 9487
I decided it's about time I post some results after lurking for a few weeks. I recently decided to make the jump over to an intel system after using AMD for what seems like forever. I just couldn't resist the performance difference any longer. Anyway, I got a good deal on a 2700k and intel motherboard and took the plunge. The board ended up being crap and I found a used Asrock Z77 extreme4 for a decent price.

I'd like to thank everyone here for their input and questions, as they've helped me with my sandy/ivy bridge oc learning curve. I have had quite a bit of success getting some decent clocks out of my chip and wanted to share. I was able to hit 5.0/5.1 stable for a short while, but temps were pushing 85C and I didn't want to run that hot for too long. Besides, getting there from 4.8/4.9 took considerable more voltage (as you probably all already figure). So I decided that from the few P95 runs I did that I'd stay with 4.8 as I could get it stable there below 1.35 V. That and temps didn't go over 70C so I was happy.

My next test is what brings me here. I decided that testing stability of my processor alone wasn't enough. I figured that I'd try running MSI Kombuster along with P95 would ensure that I had a bulletproof system essentially. I'm running two reference sapphire 6950's (modded to 6970's) at 910/1400 watercooled in series with my 2700k. I have the EK FC6970 water blocks on the cards and a XSPC RASA block on the cpu. The rads I have installed are an XSPC RX360 between the proc and GPU's and RX240 after them before the res.

I watched the system for about 5 minutes or so after I started the tests and everything looked to be running smoothly. So I walked away for a while to let it run, and when I came back the temp graph I had running looked somewhat odd to me.



I'm not sure why the second card dropped out after about 15 minutes, but that's about the same time that the display would have went to sleep (forgot to turn that off in power options before starting the test). But would that explain the sawtooth pattern in the cpu temps? After noticing the card dropped out I restarted Kombuster and watched it for 30 minutes. Temps gradually increased on both GPU's and the CPU. But the sawtooth pattern stopped. This is the first time I've graphed the temps like this and didn't know if it was normal for the CPU temps to do that. Or maybe it had something to do with the display in sleep state. More curious about this than anything. And sorry for the novel! Thanks for any input or advice you guys have.
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post #1716 of 9487
I appreciate the tutorial OP! I'm using an MSI board, and used this guide mainly for stress testing the final product. It's running the 1 hour test now, at 4.4 GHz with 1.315V on a 2600k. smile.gif

It's 34 minutes into the test, I'd really like if it can go stable in the test for at least 3 hours. smile.gif
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post #1717 of 9487
I forgot to say thank you to OP. I followed this guide while I was lurking here and successfully OCed my 3570K. Thank you OP, your thread very helpful!

My 3570K is now running at 4.4 GHz with 1.24 Vcore under load. I've been able to complete Prime95 blend test for 13 hours, am I good to go? Is my voltage too high?
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post #1718 of 9487
Spidey - that's a really good Vcore for 48x. Can you post your bios settings? Or better yet, bios screen shots?
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post #1719 of 9487
Could always try lower vcore , f.e my i5-3570k runs 4.6 prime stable when it's under 1.248-1.264 load. For 4.4 you get away with 1.15-1.2 under load.
And yes the guy who posted 1.328 for 4.8 that's pretty good chip thumb.gif
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post #1720 of 9487
Quote:
Originally Posted by cam51037 View Post

I appreciate the tutorial OP! I'm using an MSI board, and used this guide mainly for stress testing the final product. It's running the 1 hour test now, at 4.4 GHz with 1.315V on a 2600k. smile.gif
It's 34 minutes into the test, I'd really like if it can go stable in the test for at least 3 hours. smile.gif


4.4 @ 1.315vcore sounds about right, how are temps? Sounds like a good overclock to me. smile.gif Also try and aim for 24 hours or more if you can since in my experience even a successful 24 hour PRIME run will still lead to programs crashing and you end up increasing vcore a tad more. That is if you want your system to be stable 24/7 under normal use. smile.gif

Quote:
Originally Posted by kalsylum View Post

I forgot to say thank you to OP. I followed this guide while I was lurking here and successfully OCed my 3570K. Thank you OP, your thread very helpful!
My 3570K is now running at 4.4 GHz with 1.24 Vcore under load. I've been able to complete Prime95 blend test for 13 hours, am I good to go? Is my voltage too high?

4.4GHz @ 1.24 vcore is a really good chip, those voltages are really low, you could probably OC to 4.7 or 4.8 even maybe more since you still have a lot of vcore to work with. Just make sure temps max out at 90. Try getting 4.6GHz with 1.3 vcore and see what happens. smile.gif
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