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**Ivy Bridge Overclocking Guide** (with LN2 Guide at The End) - Page 13

post #121 of 1210
5/6/12 at 11:59am
that's just what that person said. i was just wondering though lol.

ugh whyyy do these chips run so hot frown.gif
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post #122 of 1210
5/6/12 at 12:08pm
  • JTDi
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What would people suggest is a suitable 24/7 CPU voltage for the 3570K?

I reset all my OC Bios settings (Asus P8Z77-M Pro) and went in, and ONLY changed the Multiplier, kept everything else stock, CPU voltage was at STOCK (offset), and changed the Multiplier one at a time on all cores, right up to to 45x, and it was stable under Prime95.

46x on stock voltage was fine on wPrime, and got a score of 1024m @ 253.218 seconds, but crashed after about 7 minutes on Prime 95.

So then I change the Base Clock to 101MHz, and kept the 45 x Multiplier, and tested it, it managed wPrime 1024m at 256.311 seconds, and ran stable in Prime95's CPU test (first option) at around 85 degree's c for 2 hours before I stopped the test.. Giving a clock speed of 4.544GHz.


All that was with the voltage set to the default 'offset' option. CPU-Z says the CPU Voltage was drawing at averagely 1.352v during the Prime95 tests.

Any suggestions where to go from here? Keeping in mind I have only changed the Base Clock from 100MHz to 101MHz and the multiplier to 45x. I also changed the iGPU voltage to a manual offset of 0.010 (I read in the decryptedtech P8Z77-M Pro that they had to do this for better stability on this board).

Regards

James
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post #123 of 1210
5/6/12 at 12:24pm
Quote:
Originally Posted by JTDi View Post

What would people suggest is a suitable 24/7 CPU voltage for the 3570K?
I reset all my OC Bios settings (Asus P8Z77-M Pro) and went in, and ONLY changed the Multiplier, kept everything else stock, CPU voltage was at STOCK (offset), and changed the Multiplier one at a time on all cores, right up to to 45x, and it was stable under Prime95.
46x on stock voltage was fine on wPrime, and got a score of 1024m @ 253.218 seconds, but crashed after about 7 minutes on Prime 95.
So then I change the Base Clock to 101MHz, and kept the 45 x Multiplier, and tested it, it managed wPrime 1024m at 256.311 seconds, and ran stable in Prime95's CPU test (first option) at around 85 degree's c for 2 hours before I stopped the test.. Giving a clock speed of 4.544GHz.
All that was with the voltage set to the default 'offset' option. CPU-Z says the CPU Voltage was drawing at averagely 1.352v during the Prime95 tests.
Any suggestions where to go from here? Keeping in mind I have only changed the Base Clock from 100MHz to 101MHz and the multiplier to 45x. I also changed the iGPU voltage to a manual offset of 0.010 (I read in the decryptedtech P8Z77-M Pro that they had to do this for better stability on this board).
Regards
James

Given that this is a new process no-one really knows, all you are going to get is a best guess. Even given the new tjmax of 105, and a peak temp of 99 (suspicious number to me). I'm undershooting that dramatically and sticking to 70C core temp max, which ends up equating to 1.15-1.2V maybe a little higher. My gut feel based on stock voltages and temps it generates is that your 1.35V is too high.

You've not mentioned temps anywhere in your post, care to share?
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post #124 of 1210
5/6/12 at 1:57pm
Thread Starter 
Quote:
Originally Posted by Teiji View Post

Isn't offset voltage better than fixed, since the voltage reduces when you're not doing anything intensive (ie. web browsing)?
It depends as the guy said, to use DVID offset you also must use the power saving things like C1E, EIST, and C3/C6 modes which most users disable because the systems are most stable with them off, the fluctuation of voltage and frequency can cause instability, but it usually doesn't happen. Personally i recommend users do without offset to begin with, and then include offset after they find their stable vcore, that is if they want a drop in frequency and voltage. From what i have tested the power savings isn't as much as you think. Voltage isn't the issue, current is, and the difference in current between idle at 4.5ghz and idle at 1.6ghz is not as different as load at those two frequencies.
Quote:
Originally Posted by Plenair View Post

I've been following this guide and OCed my i5-3570K to 4.4GHz earlier today, then I reloaded default BIOS settings and now the Turbo Boost only goes up to 3.6GHz instead of 3.8 ... is something wrong?
100.00 x 36.0
I swear by default it picked up 100.00 x 38 before I OCed it and restored
Clear your CMOS.
Quote:
Originally Posted by JTDi View Post

Hey all,
First of all, this guide rocks, and so much effort into it too! Congrats and thanks for this thumb.gif
Secondly, I've just completed my first ever build. I used an Asus P8Z77-M Pro board, and the 3570K i5.
I've managed to get a stable 4.5GHz & 4.6GHz using the settings below:
337
337
416
But anytime I go over a 46x Multiplier, I get a BSOD...
Any advice? First time build, and first time OC'ing also, so I may have missed something!
Thanks in advance
James
** EDIT **
I've decided to stop hunting the higher numbers and go for stability, and have 4.5GHz stable (CPU Voltage 1.330) with decent temps unlike th 4.6GHz temperatures.
Although if anyone wants to throw some info my way R.E 4.6GHz+ with stability, I'll get a better cpu cooler than what I have now (Arctic Cooling Freezer 13 C.O) and try them out!
Hey that isn't bad! Try to lower the CPu PLL and the VTT(VCCIO) and IMC(system agent) voltages to see if you can shave off a few C, it might allow you to use lower vcore.

You are using LLC correct?
Quote:
Originally Posted by sporadicMotion View Post

This guide is great! I have posted at 4.8 GHz w/1.34v but Prime95 crashed after 10 minutes. I'm sure I can go higher . Here's my most stable so far while keeping the vCore under the 1.3 mark. This prime session was at about and hour and 20 minutes (and still going).
338
Nice man, keep going!
Quote:
Originally Posted by trumpet-205 View Post

Got my 3570K today. biggrin.gif
So far I hit 4.4 GHz stable with IBT set 30 times. Right now BIOS has Vcore 1.21 V and LLC Level 3. CPU-Z shows CPU pulls 1.192 V at idle and 1.168 V at load. How would I translate this into offset mode? 4.4 GHz is enough for me.
Can you just set 4.4ghz without changing the voltage?
Quote:
Originally Posted by ArchLinuxFTW View Post

Caught a little typo at the very start of the LN2 section:

Thanks.
Quote:
Originally Posted by Nexus5k View Post

Its been a busy week but I finally got my PC put together and started overclocking. I ran a few IBT runs and 15 hours of Prime 95 Blend. I'm stable at 4.4GHz so far w/ 1.224v. I could probably lower it a bit and still be fine. I'm going to shoot for 4.5 or 4.6 next using the same voltage and see how that goes.
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477
Nice!
Quote:
Originally Posted by Tori View Post

is 4.8ghz @ 1.25V possible for a stable oc?

Yea perhaps if you have a golden CPU or some sub-ambient cooling like a chilled water cooler or a TEC.
Quote:
Originally Posted by JTDi View Post

What would people suggest is a suitable 24/7 CPU voltage for the 3570K?
I reset all my OC Bios settings (Asus P8Z77-M Pro) and went in, and ONLY changed the Multiplier, kept everything else stock, CPU voltage was at STOCK (offset), and changed the Multiplier one at a time on all cores, right up to to 45x, and it was stable under Prime95.
46x on stock voltage was fine on wPrime, and got a score of 1024m @ 253.218 seconds, but crashed after about 7 minutes on Prime 95.
So then I change the Base Clock to 101MHz, and kept the 45 x Multiplier, and tested it, it managed wPrime 1024m at 256.311 seconds, and ran stable in Prime95's CPU test (first option) at around 85 degree's c for 2 hours before I stopped the test.. Giving a clock speed of 4.544GHz.
All that was with the voltage set to the default 'offset' option. CPU-Z says the CPU Voltage was drawing at averagely 1.352v during the Prime95 tests.
Any suggestions where to go from here? Keeping in mind I have only changed the Base Clock from 100MHz to 101MHz and the multiplier to 45x. I also changed the iGPU voltage to a manual offset of 0.010 (I read in the decryptedtech P8Z77-M Pro that they had to do this for better stability on this board).
Regards
James
Keep under or around 1.3v, you will be stopped by temps before you are stopped by voltage. Keep under 90C 24/7 please.
Quote:
Originally Posted by 13thmonkey View Post

Given that this is a new process no-one really knows, all you are going to get is a best guess. Even given the new tjmax of 105, and a peak temp of 99 (suspicious number to me). I'm undershooting that dramatically and sticking to 70C core temp max, which ends up equating to 1.15-1.2V maybe a little higher. My gut feel based on stock voltages and temps it generates is that your 1.35V is too high.
You've not mentioned temps anywhere in your post, care to share?

Well the reason i moved it from 80C to 90C is because of two things, first of all intel moved their TJMax, and they would have never done this unless they tested it and found it can operate at higher temps. #2 the CPu also throttles 10C higher than SB throttles, and the throttle point is Intel's real point for where they think max temp should be. This new processing tech and the fact that the size has gone down warrants higher temperatures, and it wont get any better, get ready for higher operating temperatures for these CPUs. #4 these CPUs are very hard to kill, and they don't seem to be as puny as sandy bridge CPUs are.

But BTW yea I bet his temps are really high, he is prob hitting 100C.
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post #125 of 1210
5/6/12 at 2:31pm
Quote:
Originally Posted by Sin0822 View Post

Well the reason i moved it from 80C to 90C is because of two things, first of all intel moved their TJMax, and they would have never done this unless they tested it and found it can operate at higher temps. #2 the CPu also throttles 10C higher than SB throttles, and the throttle point is Intel's real point for where they think max temp should be. This new processing tech and the fact that the size has gone down warrants higher temperatures, and it wont get any better, get ready for higher operating temperatures for these CPUs. #4 these CPUs are very hard to kill, and they don't seem to be as puny as sandy bridge CPUs are.
But BTW yea I bet his temps are really high, he is prob hitting 100C.

I'm more risk averse than you I suppose, 80 would have been too hot for me on sandy. I know you've seen degradation start when you push it higher, but i'd rather play safe but still play.
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post #126 of 1210
5/6/12 at 2:42pm
Thread Starter 
Yea to each his own. i understand where you are coming from bit you can kill your cup or degrade it and then buy Intel oc warranty and get a new cpu
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post #127 of 1210
5/6/12 at 2:46pm
Quote:
Originally Posted by Sin0822 View Post

Yea to each his own. i understand where you are coming from bit you can kill your cup or degrade it and then buy Intel oc warranty and get a new cpu

true, last oc the mobo went though frown.gif
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post #128 of 1210
5/6/12 at 3:56pm
Quote:
Originally Posted by Sin0822 View Post

It depends as the guy said, to use DVID offset you also must use the power saving things like C1E, EIST, and C3/C6 modes which most users disable because the systems are most stable with them off, the fluctuation of voltage and frequency can cause instability, but it usually doesn't happen. Personally i recommend users do without offset to begin with, and then include offset after they find their stable vcore, that is if they want a drop in frequency and voltage. From what i have tested the power savings isn't as much as you think. Voltage isn't the issue, current is, and the difference in current between idle at 4.5ghz and idle at 1.6ghz is not as different as load at those two frequencies.

I always wondered about that too. Having the CPU at a high voltage but just having it sit there not stressed really shouldn't harm the chip much. But when you start to stress the chip at high voltage, that is when the wear would begin And with either way, keeping the voltage set high or using DVID offset is the same stress when the chip is under load.
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post #129 of 1210
5/6/12 at 3:58pm
Quote:
Originally Posted by Tori View Post

is 4.8ghz @ 1.25V possible for a stable oc?

Yeah, on a good chip. One member here punceh got it on 1.22V.
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post #130 of 1210
5/6/12 at 4:36pm
  • JTDi
  • New to Overclock.net
Quote:
Originally Posted by Sin0822 View Post

Hey that isn't bad! Try to lower the CPu PLL and the VTT(VCCIO) and IMC(system agent) voltages to see if you can shave off a few C, it might allow you to use lower vcore.

You are using LLC correct?

Thanks for the reply man!

My CPU PLL is set at 1.8 and the Mobo wont let me lower it at all, the only option I have it to raise it, same with the VCCSA, its stock at 0.925 and wont let me lower it, just raise it...

PCH Voltage, which is default @ 1.050 is all I can make lower than default!

And yeah, using LLC!

James
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