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Skylake Overclocking Guide [With Statistics] - Page 350

post #3491 of 11360
Quote:
Originally Posted by SteveRo View Post

So far, my experience - skylake c states on or off makes no difference when testing for max cpu oc. smile.gif

Yeah and to be honest I am a "stock" kind of guy. I prefer to keep as many factory settings as possible because I tend to keep my PCs for quite a long time. If I was upgrading every 2 years I would probably try to squeeze everything out of my CPU and GPU...but I don't see the point.

I guess for now I will stick with 4.6GHz and 1.29V and Override Mode.
    
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post #3492 of 11360
Quote:
Originally Posted by Jpmboy View Post

1) If you find that your system "requires" a higher vcore setting when using adaptive, it is not set up correctly or not implemented in the bios correctly
2) "... it could not change fast enough..." - nonsense. unless you disable turbo and speedstep, clock steps (and therefore frequency and current) are "not fast enough" either. doh.gif
3) if adaptive is setting a higher vcore than you SPECIFY in bios, it is either broken in the bios, or set up incorrectly. (and it is broken in a few manufacturer's early bios releases)
4) Clock bin lowering via speedstep and per-core throttling via prochot are not the same. throttling is not the clock bin change induced by load (re: current) change.

and fyi - even with a fixed (or even clamped) voltage, at stock vcore the intel spec "permits" a 70mV 10 usec (micro second) overshoot in the vcore rail... this is just a physical property of the circuitry... and why LLC is available to you. thumb.gif

Read this post from OCN member Praz: http://www.overclock.net/t/1568154/asus-north-america-asus-z170-motherboards-q-a-thread/1700_20#post_24535273

1.) if I set an offset that makes my system stable at idle then it gives too much vcore under load, if I set it correctly for under load, my system is unstable at idle (web browser crashing ad alike)

2.) then what do you call the phenomenon when suddenly changing loads are not followed correctly by Vcore change and makes your system crash under this connditions (for example a game that spikes your cpu usage sometimes, but most of the time it dose not use 100% load)

3.) it set 1,424v even why my system is stabe on 1,36, my idle volts were 1,2, this is the example from 1.) where I had stable idle too high load (this is with offset)

4.) I know, my bad, it was probably confusing to call it throttling. I was talking about the speed step multiplier change, I fix it in my post.
post #3493 of 11360
Maybe someone with an Asus Maximus here know the answer, that thread seems to be dead:

http://www.overclock.net/t/1570468/asus-z170-rog-viii-series-thread/40#post_24559627
post #3494 of 11360
Quote:
Originally Posted by Cyro999 View Post

Why isn't your vcore at ~1.35 under load when you're setting it that way? :0

That's one of the things I did a bunch of reading on. I think that's the Vdroop thing people keep talking about, this MSI board doesn't appear to have LLC, and voltage drops under load. It'll idle around the set vcore, but as soon as you load it, it drops down. The motherboard has had 2 bios updates in a month adjusting "Vdroop" according to the patch notes, so maybe they are still adjusting it at a firmware level.
Edited by kyemo - 11/1/15 at 6:19am
post #3495 of 11360
Quote:
Originally Posted by LostParticle View Post

To all of you guys who are using HWiNFO64, the BEST monitoring tool available , I suggest to spare a couple of minutes and customize it to your own needs and liking smile.gif On default it shows some arbitrary, erratic, values but it is not its "fault", it has to do with what the motherboard sensors are providing. I own the three Z97 motherboards shown in my sig_rig and for each one of them I had to hide / disable monitoring certain values. If you see a temperature or a voltage value having a constant and absurd value, just right-click on it and select "Hide" and "Disable Monitoring". If you will face any serious issue you can always post your question at the [OFFICIAL] HWiNFO/32/64 Thread and the developer will happily assist you. If it is something serious please post the zipped debug file, as well.
Warning: Spoiler! (Click to show)
Electing to send the bug report is a good thing. thumb.gif
It's actually critical to disable and hide the excess sensors... otherwise it seems polling is using too much cpu time (3% or more according to Process Explorer). Eliminating a bunch (>100) reduced cpu usage to 1-2%.
Whereas aid64 is using <1% even with the OSD panel up. Also, Package POwer seems correct when using Adaptive vcore, but never goes above 10-20W with fixed vcore on an ASUS Mex VIII Extreme?
Quote:
Originally Posted by Balu0 View Post

Maybe someone with an Asus Maximus here know the answer, that thread seems to be dead:

http://www.overclock.net/t/1570468/asus-z170-rog-viii-series-thread/40#post_24559627
those are the vrms. should only get to ~ 40C under heavy use. (and should not be touched when under power). if they are getting too hot, get some airflow over the attached heat sinks.
Edited by Jpmboy - 11/1/15 at 6:20am
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post #3496 of 11360
Quote:
Originally Posted by SteveRo View Post

Assuming we are overclocking just the cpu at this point - I like to set the cpuv to a constant max value that I am willing to accept. The max cpuv you are willing to accept is an acceptance of risk. For Skylake (measured) cpuv: 1.4v, 1.45v even up to 1.52v (Intel product spec) if you are careful and have really good cooling - water, phase change, cascade, ...

Thanks for the reply, that's basically what i was doing. One of the problems is that the vcore I'm happy to have the processor running at (around 1.35) seems to trigger some sort of electrical protection according to HWinfo and drops the core clock (and insta-crashes everything on a stress test). One of the things I was looking for was what exactly "IA: Electrical design point" and "RING: Max VR Voltage, ICCmax" protection flags in HWinfo actually mean as far as trouble shooting goes. (apart from the obvious, as I'm pretty sure I shouldn't be exceeding ICCmax of 100A at vcore 1.25-1.35V)
post #3497 of 11360
Quote:
Originally Posted by error-id10t View Post

In your BIOS you'll find the options yeap.

I'm just curious myself why I saw 0.0v with C3 only and package state disabled, didn't think that allowed voltage drop to that level. I hate going around the back of the mobo with the DMM scared I'll slip and a second later my computer is frozen and upon reboot it's showing 00 !!

The ROG Hero doesn't have Probelt test points? Thought they were on all ROG boards.
post #3498 of 11360
Quote:
Originally Posted by kyemo View Post

Thanks for the reply, that's basically what i was doing. One of the problems is that the vcore I'm happy to have the processor running at (around 1.35) seems to trigger some sort of electrical protection according to HWinfo and drops the core clock (and insta-crashes everything on a stress test). One of the things I was looking for was what exactly "IA: Electrical design point" and "RING: Max VR Voltage, ICCmax" protection flags in HWinfo actually mean as far as trouble shooting goes. (apart from the obvious, as I'm pretty sure I shouldn't be exceeding ICCmax of 100A at vcore 1.25-1.35V)

in your bios you need to increase the processor power limits when you OC. what MB?
Quote:
Originally Posted by Cyro999 View Post

What's the best way to check that?
if you have aid64, many ICs have the primary manufacturer encoded:



otherwise, pull the heatspreaders or a few posts tests can narrow it down (on x99 at least)
Edited by Jpmboy - 11/1/15 at 6:30am
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post #3499 of 11360
Quote:
Originally Posted by kyemo View Post

That's one of the things I did a bunch of reading on. I think that's the Vdroop thing people keep talking about, this MSI board doesn't appear to have LLC, and voltage drops under load. It'll idle around the set vcore, but as soon as you load it, it drops down. The motherboard has had 2 bios updates in a month adjusting "Vdroop" according to the patch notes, so maybe they are still adjusting it at a firmware level.

No board should have a 0.13v vdroop and the reported voltage is still not neccesarily accurate, it could be even lower
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post #3500 of 11360
I would expect Adaptive Vcore should remain what I set in BIOS, yet for my Hero this is definitely not happening. (902 BIOS). BIOS 1001 has bugs with Adaptive that are worse than 902 IMO so I've stuck with 902.
Setting 1.395 +.005 overshoots to as much as 1.424 with LLC 4...not a huge amount all things considered but not ideal.

I think I will go back to pure offset and do some more tests....I know when I used manual mode the DMM measured vcore was pretty spot on to the set point in BIOS and with software readings.
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