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Ivy Bridge Overclocking Guide ► Asus Motherboards - Page 647

post #6461 of 7032
Quote:
Originally Posted by DF is BUSY View Post

but what if my ultra LLC kicks my vcore in CPUZ over 1.45 even though my bios was manually set to the target 1.45 or lower? do the same guidelines still apply?


thinking.gif   thinking.gif   thinking.gif   

well then you should be monitoring it ! tongue.gif
Yeah that's overshooting - so if it overshoots, that's no good either.
post #6462 of 7032
On most ASUS boards High or Very High does best in terms of minimizing difference between setpoint and actual value.

High comes closest to the setpoint but has a still quite large drop from idle - load.
Very High has a higher value then setpoint, but difference between load and idle / low loads is much smaller.

I do have a wierd issue with my 3770K.

It needs a bit of volts to run 5Ghz but thanks to delid temps are great. <70c with watercooling in LinX / Prime95 Small FFT w/ AVX.

Problem is, 50x100 is unstable as hell and cannot be stabilized with any voltage.
49x102.1 is stable as a rock on 1.448v load. (+0.225v offset, Very High LLC 75%). Low load voltage is 1.456v.

It's so wierd how Ivy seems ot have certain multi / bclk combo's that run better then others as well.. Thought this kinda ended with Nehalem (S1366)
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post #6463 of 7032
I've never had it run better with a BCLK of any kind, always was more stable without it. Just up the voltage and test until it's stable.

It probably isn't that "any" voltage won't work for 5ghz, it's likely you hit a wall or it needs a lot more. I needed +0.15 to go from 4.8 to 5.0, so I'd imagine I'd need similar to +0.1 to go up to 5.1ghz. For me, +0.1 would be 1.55v + very high LLC. Not saying this would be stable though, it might be that I hit a wall too that requires 1.65v to be stable at 5.1ghz, I haven't tried. Bottom line is, it's probably not that no amount of voltage will work for 5ghz, it's more than likely that the voltage required to run it at 5ghz is simply way too high.
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post #6464 of 7032
Well, that's the fun part. i AM running 5Ghz stable. At 1.448v load. 16 hours of Prime 95 14GB AVX, 5 hours of LinX AVX, 1000% memtest. Not even 1 error. Event viewer is clean as well.
This is on 49x102.1.

Whenever I run 50x100 it will not even pass 20 minutes of LinX on 1.448v. Hell, it needs like, 1.496-1.504v to even complete the first hour...

That's why I find it so odd.. lol.

Just like gaming. 50x100 @ 1.448v is crash every 10-15 minutes of BF4.
49x102.1 = no crashes at all. None.
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post #6465 of 7032
Quote:
Originally Posted by Imprezzion View Post

Well, that's the fun part. i AM running 5Ghz stable. At 1.448v load. 16 hours of Prime 95 14GB AVX, 5 hours of LinX AVX, 1000% memtest. Not even 1 error. Event viewer is clean as well.
This is on 49x102.1.

Whenever I run 50x100 it will not even pass 20 minutes of LinX on 1.448v. Hell, it needs like, 1.496-1.504v to even complete the first hour...

That's why I find it so odd.. lol.

Just like gaming. 50x100 @ 1.448v is crash every 10-15 minutes of BF4.
49x102.1 = no crashes at all. None.

Strange thinking.gif I thought increasing or change the BLCK isn't wise to do or it damage something i'm told?
post #6466 of 7032
Not entirely true. To ~104Mhz there's no issues. From 104-107 there's a risk of data loss as SATA can become unstable. >107mhz is not wise to do. But.. Extreme benchers run up to 110+ so..

For 24/7 i find that, if it's stable, everything up to 104Mhz is fine.
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post #6467 of 7032
I've just recently tried overclocking my 3770k on a M5F motherboard, and I have a question regarding vcore setup.
At the moment I am running a light OC with a 42 ratio, but trying to see how low I can run the voltage.
Right now I am testing 1.165v vcore and 1.55v CPU PLL, with vcore set to Manual.
So far ran stability testing with AIDA64, maxing temps out at 70,70,69,71 over a 12 hour run.
With Prime95 28.4, running blend (using AVX). temps max out at 72,73,71,74 during a 12 hour run.
Using a H80 cooler right now (My MCP655 broke some weeks ago).

I am building a new rig, and I am looking to delid the CPU and use custom water cooling in a Caselabs Merlin ST10 case.
I will aim for a 4.6 GHz 24/7 overclock.

So my question, most guides say to check for stability with Manual vcore setting, and then switch to Offset.
My question then is; Are there any benefits to using Offset instead of Manual, as long as everything is stable with the Manual setting and using a relatively low vcore voltage (other than possibly saving a few bucks on the power bill) ?
Edited by Propanelgen - 3/11/14 at 6:34am
post #6468 of 7032
Quote:
Originally Posted by Propanelgen View Post

I've just recently tried overclocking my 3770k on a M5F motherboard, and I have a question regarding vcore setup.
At the moment I am running a light OC with a 42 ratio, but trying to see how low I can run the voltage.
Right now I am testing 1.165v vcore and 1.55v CPU PLL, with vcore set to Manual.
So far ran stability testing with AIDA64, maxing temps out at 70,70,69,71 over a 12 hour run.
With Prime95 28.4, running blend (using AVX). temps max out at 72,73,71,74 during a 12 hour run.
Using a H80 cooler right now (My MCP655 broke some weeks ago).

I am building a new rig, and I am looking to delid the CPU and use custom water cooling in a Caselabs Merlin ST10 case.
I will aim for a 4.6 GHz 24/7 overclock.

So my question, most guides say to check for stability with Manual vcore setting, and then switch to Offset.
My question then is; Are there any benefits to using Offset instead of Manual, as long as everything is stable with the Manual setting and using a relatively low vcore voltage (other than possibly saving a few bucks on the power bill) ?

Actually, yes. When you are using little stress on the CPU, the frequency drops to 1.6GHz, but with manual your Vcore is what you have set it to in bios. You are running unnecessary voltage through your CPU, creating unnecessary heat and using unnecessary power. With offset when the frequency drops to 1.6, the Vcore drops also, usually to 1V or less. When you need the power, it will automatically jump up to what it needs. So, with offset, you get nothing that is unnecessary but all the advantages when you need them.
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post #6469 of 7032
Quote:
Originally Posted by Propanelgen View Post

I've just recently tried overclocking my 3770k on a M5F motherboard, and I have a question regarding vcore setup.
At the moment I am running a light OC with a 42 ratio, but trying to see how low I can run the voltage.
Right now I am testing 1.165v vcore and 1.55v CPU PLL, with vcore set to Manual.
So far ran stability testing with AIDA64, maxing temps out at 70,70,69,71 over a 12 hour run.
With Prime95 28.4, running blend (using AVX). temps max out at 72,73,71,74 during a 12 hour run.
Using a H80 cooler right now (My MCP655 broke some weeks ago).

I am building a new rig, and I am looking to delid the CPU and use custom water cooling in a Caselabs Merlin ST10 case.
I will aim for a 4.6 GHz 24/7 overclock.

So my question, most guides say to check for stability with Manual vcore setting, and then switch to Offset.
My question then is; Are there any benefits to using Offset instead of Manual, as long as everything is stable with the Manual setting and using a relatively low vcore voltage (other than possibly saving a few bucks on the power bill) ?

Ok - your thing is you have a really, really low PLL at 1.55.
Leave it on auto / 1.8 for the time being, then tinker with that.

As for testing - do 24hrs on prime, and forget aida.

Temps seem fine.

As for offset - reduces power consumption and reduces temps(usually) - Also low voltage + offset is a little pointless
post #6470 of 7032
Quote:
Originally Posted by Totally Dubbed View Post

Ok - your thing is you have a really, really low PLL at 1.55.
Leave it on auto / 1.8 for the time being, then tinker with that.

As for testing - do 24hrs on prime, and forget aida.

Temps seem fine.

As for offset - reduces power consumption and reduces temps(usually) - Also low voltage + offset is a little pointless
Yeah I was running with PLL on auto (BIOS then sets it to 1.8v), and then I have tried lowering both vcore and PLL to see how low I could set them while system still being rock stable.
I don't really want to play with a higher overclock until I get my new rig up and running, still waiting for Caselabs to send my case (9 days on "awaiting fullfillment" now).
Seems my CPU is good, so hoping I won't brick it while delidding (going for hammer and vise) smile.gif
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