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Complete Overclocking Guide: Sandy Bridge & Ivy Bridge | *ASRock Edition* - Page 61

Poll Results: Was this guide helpful?

Poll expired: Oct 17, 2012  
  • 80% (237)
    Yes (and I DO have an ASRock motherboard).
  • 15% (45)
    Yes (but I DO NOT have an ASRock motherboard).
  • 2% (7)
    No (and I DO have an ASRock motherboard).
  • 2% (7)
    No (but I DO NOT have an ASRock motherboard).
296 Total Votes  
post #601 of 9460
315

I know 1 1/2 hours is not long enough.. But I am still running prime with no hiccups...
    
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post #602 of 9460
Hi complete novice at this overclocking! I have aAsrock Z77 Extreme 6 motherboard and within my UEFI, i do not have "Turbo boost limit" or "Core current limit" mentioned. Though I do have 2 that Idon't understand "Primary plane current limit" and "Secondary plane current limit"

Any help on this issue would be greatly appreciated.
post #603 of 9460
Thanks for an excellent guide! I managed to run Prime 95 at 4.7 for an hour on my i5 3570k before trying for 4.8. Much higher than I expected to be able to get on ivy bridge, especially in a mITX case. Short of the power supply and graphics card, the only fan in the rig is the 120mm from the Kuhler 620 blowing down on the board through the radiator.

Silverstone SG-08
Antec Kuhler 620
Asrock Z77E-ITX
Intel i5 3570k

4.7Ghz Overclock.jpg 697k .jpg file


Unfortunately, I have been unable to replicate this result once trying for a stable 4.8ghz. I walked the voltage up steadily trying to stabilize 4.8ghz, stopping at around 1.3 volts. But when I knocked the multiplier back to 4.7, it wasn't as stable as before. In fact, I have stability issues down to at least 4.5 with extended runs of Prime 95. Temps are staying in the 70s, low 70s for 4.5 and below so I don't think the temp is a factor. I didn't drop the voltage back since I never came near the 1.5 mark, yet it seems I have less stability with the lower clock speeds using the higher voltage.

Is it possible to have too much voltage for a given clock speed? IE, would the voltage required for 4.7ghz be cause instability at lower clocks that had been stable on lower voltages? I figured as long as I was below 1.5 volts I would be good to go. Any idea what is going on here?

I've since started testing back at 4.4 and walking it back up using lower voltage, but it seems I'm having to take too large of step backwards on the multiplier to achieve long term stability?
Edited by QCDStick - 5/29/12 at 7:42am
post #604 of 9460
How long on prime, blend, is considered stable, I made it to 4 1/2 hours before BSOD
Edited by jose06 - 5/29/12 at 6:18pm
post #605 of 9460
Quote:
Originally Posted by Crisbeq View Post

Hi complete novice at this overclocking! I have aAsrock Z77 Extreme 6 motherboard and within my UEFI, i do not have "Turbo boost limit" or "Core current limit" mentioned. Though I do have 2 that Idon't understand "Primary plane current limit" and "Secondary plane current limit"
Any help on this issue would be greatly appreciated.

Primary is CPU core and secondary is iGPU.


Anyway Im a long time lurker on OC threads and first time poster here just because I read this:
Quote:
Originally Posted by kennyparker1337 View Post

Wooooooah. eek.gif
http://communities.intel.com/message/150226
Does this mean the Vcore Max is OFFICIALLY 1.52v?!
There was like 1,000 threads on what the max was, and no one had any official evidence.... so wow... might have to change the guide a bit...


There might be a 1000 threads about people wondering what the max was, but this value has indeed been stated in the "2nd Generation Intel® Core™ Processor Family Desktop Datasheet" since these CPU's were released (page 80 top right). And just to state the obvious for the next time you start overclocking anything, read the manual first wink.gif.

At least I laughed ><<br /> edit: lol @ parsing.

But to come back at when the CPU degrades and how fast, god knows. I've had this chip here running at 1,62v for a long long time now and it has yet to break down on me to get a new CPU from Intels tuning plan (You can sign up here if you didn't know about it, might also be a nice addition to your guide as a "safeguard": http://click.intel.com/tuningplan/).

Basically as intel says push it to the limit, pushed mine to 5,8GHz and running really hot. I personally don't really mind hitting 90-95 degrees, these CPU's are made to take the beating as are most self build watercooling rigs. Running the CPU at 90-95 degrees also means your water temperature will be really high after load testing for 24 hours, but who in the world would push his 2600k for 24 hours @ 100%? thumb.gif

And better yet, I still have to find a 2600k that doesn't go past 5GHz. Some chips choke around 5,2GHz, others are fine with 5,4GHz and rarely will you go past that without cranking up your vCore over 1,58v.


My personal advices are these:

Only OC the CPU at first, do memory after as you don't want a memory OC to limit your CPU OC.
Run Prime95 with in-place large FFT's, it will bail within 30 minutes with a BSOD if your OC is unstable and getting past the hour mark usualy means it is pretty stable for sub 5GHz overclocks (as in will run for 24/7 most likely without error).

Afterwards run GPU-Z's render test together with Prime95 blend to bump that vCore a tad higher for game testing. Lets say you have it stable 4,6 @ 1,39v testing like this will bump it up with 0,02v most likely.
Edited by sfjuocekr - 5/29/12 at 6:33pm
post #606 of 9460
Right now I've got a stable OC at 4.5ghz on my 2600K.
I'm planning to add another 8gb of ram to make my system at 16gb.
Is it gonna affect my stable Overclock?. If ever, what settings do I need to change/tweak? thanks in advance
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post #607 of 9460
Put memory settings to auto, put new RAM in and work from there tweaking it.

If it's the same RAM kit, don't worry about all that just toss it in and it "should" work.
post #608 of 9460
It will be the same ram that I will install. The same brand, speed and model. So what your saying is, if I have to install the same RAM kit, I'll no problem with my stable OC no tweaking whatsoever?
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WD Green Caviar 64mb Sata III OCZ Vertex 4 SSD 128GB [OS & Important Apps] Seagate Barracuda 250Gb 7200rpm Noctua NH-D14 
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Hard DriveHard DriveHard DriveCooling
WD Green Caviar 64mb Sata III OCZ Vertex 4 SSD 128GB [OS & Important Apps] Seagate Barracuda 250Gb 7200rpm Noctua NH-D14 
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post #609 of 9460
Hi,

I've managed to solve the clicking sound by unplugging the casing speaker. But the HDD activity light still not functioning.

First impression of Z77 Extreme4, this mobo posts lightning fast!

Any kind souls can post me the bios config for i5 3570k overclock? My last OC experience was Q9550. Thanks.
Edited by yswai1986 - 5/30/12 at 8:20am
post #610 of 9460
Quote:
Originally Posted by jose06 View Post

How long on prime, blend, is considered stable, I made it to 4 1/2 hours before BSOD
6 hours is recommended for your final test. If you can't make it to 6 I wouldn't run it 24/7.
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