Maximus VI Hero & 4670k overclock help.

pastymuncher

pastymuncher

pastymuncher

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Having changed from the Z87-A which was a good board in it's own right, to the Hero i have been having problems with overclocking so if any Hero owners could help it would be much appreciated.

First off i couldn't get any overclock to work without a 0124 bsod even with increasing voltage. Just to try something different i tried the cpu level up at 4.4ghz and it booted fine. I ran linx for 20 passes and max voltage was 1.264v which is exactly what the 4670k needed for 4.4ghz manually in the Z87-A. I then tried manually and got the same clockspeed with the same volts. Unfortunately it doesn't lower the volts at idle so i tried the offset. I applied 0.030v which gave me 1.254v when loaded. Unfortunately the same thing happens as it did on the Z87-A, after around a minute the voltage shoots up to 1.360v and along with it the temps!! This is doing my head in now and i really would like to get this sorted once and for all. How do i stop this happening while still having a stable overclock and still able to lower the voltage at idle?

I am on the latest bios, with all the latest drivers, fresh install of win7 pro, balanced power saving in windows. LLC has been lowered to lvl 3 for now.
 
Does the hero feature the following voltage options?

auto
manual
offset
adaptive

Theese are the options on the formula, and i know for definite that using adaptive will lead to the vcore spiking quite high.
 
Yep, all of those. I would never use adaptive, heard too many bad things about it. I applied a offset of 0.30v yet it still makes the big jump after around a minute. The Z87-A did it as well which is why i had to settle for using a fixed voltage. The thing is that using a fixed voltage means that when the cpu drops to 800mhz at idle the voltage stays at 1.265v. :mad:
 
I read that a couple of days ago but have just read it again and noticed what i think is the cause of my problem so many thanks for posting the link Idleman. It states:-

There is one issue with Offset and Adaptive Mode that needs to be taken into account. The processor contains a power control unit which requests voltage based upon software load. When the PCU detects AVX instructions, it will ramp Vcore automatically beyond normal load voltage. There is no way to lock Vcore to prevent this if using Offset or Adapative Mode. This is pre-programmed by Intel into the PCU.

As an example, a CPU is perfectly stable at 1.25V using a manual voltage (static), if Adaptive or Offset Mode is used instead, it is impossible to lock the core voltage when running software that contains AVX instruction sets – stress tests such as AIDA and Prime contain AVX instruction sets. When the AVX instructions are detected by the PCU, the core voltage will be ramped an additional ~0.1V over your target voltage – so 1.25V will become ~1.35V under AVX load. If you intend to run heavy load AVX software, we recommend using Manual Vcore, NOT Adaptive or Offset Mode.
Click to expand...

I presume Linx uses AVX instructions then as this is exactly what is happening and the voltage jumps to around +0.1v more than i have set it to. I only thought this applied to Adaptive voltage but reading that it would seem to apply to offsets as well. I take it games don't use AVX instructions?
 
Wasnt aware that AVX effected offset vcore. I had read that adaptive is the one to watch out for. Im on fixed vcore myself as well.
 
It works!!!!!!! :D:D:D:D:D

That's what i thought before setter. Then Idleman posted that link and i read though it properly this time and found that.

Linx uses AVX by the looks of it. I have just been using IBT v2.2 which would appear doesn't use AVX and with a Offset of 0.030v i am getting 4.5Ghz with a rock steady 1.248v under load. On the Z87-A i needed a manual voltage of 1.285v for 4.5ghz. I can do 4.4ghz with a offset of 0.020v to give me a steady 1.235v which needed 1.265v manually on the Z87-A. Temps have tumbled too. On IBT with 4.5ghz i only hit 49/48/48/41 degrees C now where before it was in the high 60's-low 70's. I am chuffed to bits with this and may be able to get a bit further than my 4.8Ghz max and stretch my advantage a bit further in the Cinebench R15 thread (still top i5 after all this time, luckily 8Pack only does the 4770k :D).
 
Lol, nice one. I may look into using offset myself as this chip is quite a hot runner. I do find it a bit confusing though. Im on fixed vcore and have just left LLC on auto.
 
For vcore iirc im on 1.275 in bios, 1.280 in windows idle going by cpuz, previous to flashing to the latest bios it idled at 1.264 in windows iirc.
 
setter said:
Lol, nice one. I may look into using offset myself as this chip is quite a hot runner. I do find it a bit confusing though. Im on fixed vcore and have just left LLC on auto.
Click to expand...

Hi setter, using the offset voltage my self its a lot better.

What l did was find out what my CPU idle voltage was roughly, my 4820K at stock idle speed needs roughly 1.248v. So l already
know that l need 1.344v in the Bios to be stable at 4.6GHz.

So my offset voltage would be set at + x amount of volts, them take the idle voltage of 1.248v away from 1.344v=0.096v.

Which gives you a offset voltage of 0.096v, so you have a good starting point. Mine actually needs 0.085v, its just trial
and error from there.

Give it ago bud let me know how you get on, got my new 840 500GB EVO SSD. So know l don't have to keep
deleting my games to make way for new one's.

So when l put my C: image of about 215GB on the new SSD --> OS + Programs + Game's. It now leave's me bags
of room for even more game's or programs and its way faster than my 830.

The first extra game installed was BF4 which l have been playing today and really enjoyed it.:D

Hope this helps bud,
Oldphart.:)
 
From looking at a few old screenshots of coretemp/cpuz my idle voltage reads as.

cpuz, 0.704v
Coretemp, 0.8250v

Under p95 load at stock speed.

cpuz, 1.248v
coretemp, 0.8250v

I take it i should be going by the idle voltage in cpuz and not the coretemp vid readout? In bios on fixed vcore of 1.276, this results in 1.2800 at load.

Nice ssd upgrade, will have to join you for a round of bf4 shortly mate.
 
Got a couple of 0124 bsod's while gaming so increased the offset to 0.060v and am back at the 1.264v that i was at on the Z87-A. Oh well, so much for hoping for some more headroom. Just goes to show how good the Z87-A is though and that a more expensive board get's you no more headroom with Haswell.
 
Is 1.264 your load voltage when gaming pasty? Running the formula which is a full blown ROG board, it and the extreme have a few bios features that are designed for those who clock on more exotic cooling etc. Tbh i wish now id spent less as ill never use some of the stuff on it. Nice looking board though.

Im thinking of going over to offset myself as im not keen on the voltage at idle.
 
Yep, 1.264v under load while gaming oe even IBT as it doesn't use AVX. If i was to stress using Linx though, which does use AVX, i get the extra 0.1v added on. Stay away from anything that uses AVX and offset voltage is fine. I am happy now as the voltage drops at idle along with the clockspeed now. The whole pc only pulls 68w at the wall when idling and around 78w when browsing the net.

The Hero has some exotic clocking features as well. Not only will i never use them, i don't know what half of them do either. :D
 
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