Asus Maximus Hero VIII and Intel 6700k stuck at 800mhz and 8x multiplyer

[Stucutting]

I hope someone can help me with this as I have been tearing my hair out trying to sort it out. I noticed the other day when I opened Ai suite for the first time after building this new system that my CPU was stuck at 800mhz no matter what I did.

I reinstalled windows this week and flashed the latest bios but it is still like it. I have been through all the power settings in Windows that I can think of like the minimum and maximum cpu speeds and also tried disabling speedstep and c states in the bios.

I am really not sure what to try next and I am really hoping it is just a setting I have missed and not a faulty board or cpu.

Any ideas would be most welcome.

Thanks

Stuart

[Stucutting]

EasyLover wrote:
Hi, one person in my circle had this same problem. His CPU was stuck at 800MHz. He has Extreme VIII board with 6700k. After thorough testing, it was found that culprit was the PSU. After changing the PSU, that chip worked perfectly fine. Not saying that this could be the issue with you but nothing wrong in trying.

Thanks. I got my motherboard, CPU and Ram back today and they said it was working fine and supplied pictures of it running at full speed in Aida. I am now thinking it could be the PSU too. I wanted to replace it anyway even though it is brand new. It is a Corsair CX750 which I was sent to me by corsair after my H100 took out my whole system. I was a bit dubious about using it as I had heard they are a bit rubbish.

[Stucutting]

EasyLover wrote:
Hi, one person in my circle had this same problem. His CPU was stuck at 800MHz. He has Extreme VIII board with 6700k. After thorough testing, it was found that culprit was the PSU. After changing the PSU, that chip worked perfectly fine. Not saying that this could be the issue with you but nothing wrong in trying.

I am really not sure what to do now as I bought a new Corsair RM 850x PSU yesterday and the problem is still persisting. I tried another fresh install of windows again just in case and checked all the settings again in the bios. The strange thing is that there doesn't seem to be an option to change anything like the multiplier in the bios.

The retailer said that after clearing the cmos my system was working for them in Aida but this doesn't seem to be working for me. I tried running the stability test in aida yesterday and it still stayed the same.

At least I have a PSU that I am happier with though. 😛

[Nate152]

Try setting the AI Overclock tuner to manual and see if that gives you the option to change the cpu core ratio, sync all cores and set it to 42.

I don't see how it could work for the pc shop and not you. 🙂

[Stucutting]

Nate152 wrote:
Try setting the AI Overclock tuner to manual and see if that gives you the option to change the cpu core ratio, sync all cores and set it to 42.

I don't see how it could work for the pc shop and not you. 🙂

Thanks, I will give that a try tonight. I think I did try that before and it didn't give me the option of changing anything in the ratio as it was sort of grayed out.

It is very odd that they got it working. They have suggested I send it back again which is a pain so I wan't to make sure I have exhausted everything I can do first. I might try stripping everything out of it tonight too to see what happens.

[Subsider]

question ? are you running on a UPS (battery backup) If so some have power options that can override windows , ie. when running off the UPS to save power it lowers the processer state

[Stucutting]

Subsider wrote:
question ? are you running on a UPS (battery backup) If so some have power options that can override windows , ie. when running off the UPS to save power it lowers the processer state

No I haven't got a UPS backup on my system.

[Stucutting]

I didn't have any luck with stripping out any of the components as it was still running slow but I thought i would give throttlestop a try and disable BD PROCHOT and that did get it all running at the correct speed. The temperatures went up a bit higher than I expected. Around 68C when doing a stability test in Aida. Is it possible that my motherboard has a faulty sensor if throttlestop sorted it out and my temps all seem fine?

[SitraX69]

the pc turns on with 800 Mhz and multiplier 8x. I tried to overclock , without ai suite 3.
And many other settings.
Always started with 800 Mhz 8X.
Random playing my son Zomies vs plants and after warming the pc
suddenly it worked 4000 Mhz. :eek:
Now whenever the running pc hot it clocks high


what could that be ?

sorry for my english

[Stucutting]

SitraX69 wrote:
the pc turns on with 800 Mhz and multiplier 8x. I tried to overclock , without ai suite 3.
And many other settings.
Always started with 800 Mhz 8X.
Random playing my son Zomies vs plants and after warming the pc
suddenly it worked 4000 Mhz. :eek:
Now whenever the running pc hot it clocks high


what could that be ?

sorry for my english

That sounds like how it is supposed to work I think. It will idle at around 800mhz then when playing games or other demanding tasks it will ramp up to full speed.

[SitraX69]

YES clear, but even with full speed is the cpu no longer down . Until the next day .:(