CPU Stuck at limited to 3.6ghz no matter what.

[SkylakeAlex6700k]

My I7 6800k randomly decided to limit its core ratio to 36 for no good reason. I can change it in bios, but it doesn't stick to the CPU. In balanced mode, it downclocks as usual, but under load goes to 3.6ghz. On high perf mode, it's 3.6 all the time. I used to have a 4.4ghz overclock on it and I've lost a decent amount of performance.

 

Please help.

[porina]

Run hwinfo64 or similar, and see if it reports a limiting reason. Thermal, power, current throttles...

 

Anything else change around the time you noticed this happening?

[SkylakeAlex6700k]

13 minutes ago, porina said:

Run hwinfo64 or similar, and see if it reports a limiting reason. Thermal, power, current throttles...

 

Anything else change around the time you noticed this happening?

Nothing at all. Will do.

[SkylakeAlex6700k]

16 minutes ago, porina said:

Run hwinfo64 or similar, and see if it reports a limiting reason. Thermal, power, current throttles...

 

Anything else change around the time you noticed this happening?

here's what it gives me.

 

[porina]

I don't have it on me to get an example screenshot, but look in the sensor tables. There are some yes/no flags in one section for various limiters.

[SkylakeAlex6700k]

4 minutes ago, porina said:

I don't have it on me to get an example screenshot, but look in the sensor tables. There are some yes/no flags in one section for various limiters.

Sure. It doesn't look like anything is indicating a sort of limiting. 

 

[ApolloX75]

My 4670k did this to me once. I had to clear the CMOS and start from scratch to fix it.

[SkylakeAlex6700k]

17 minutes ago, ApolloX75 said:

My 4670k did this to me once. I had to clear the CMOS and start from scratch to fix it.

just cleared CMOS. No improvement.

 

[captain_cereal_hands]

I have the 6800K what voltage did you need to get 4.4Ghz?

[porina]

Remembered I have attached a screenshot previously and it still seems to be on the system. Look for something like the following:

 

 

Note the two lines saying "yes" are normal when running stock, but I think should be "no" if manually overclocking unless you are triggering a limit for some reason. 

[SkylakeAlex6700k]

1 hour ago, captain_cereal_hands said:

I have the 6800K what voltage did you need to get 4.4Ghz?

i got 4.4 stable at around 1.4 lol pretty high. tuned it to 4.3 at 1.35.

[SkylakeAlex6700k]

1 hour ago, porina said:

Remembered I have attached a screenshot previously and it still seems to be on the system. Look for something like the following:

 

 

Note the two lines saying "yes" are normal when running stock, but I think should be "no" if manually overclocking unless you are triggering a limit for some reason. 

I'll take a look!

[SkylakeAlex6700k]

Heres how mine looks. 

[captain_cereal_hands]

4.3Ghz at 1.35V I could be okay with that.

[porina]

1 hour ago, SkylakeAlex6700k said:

Heres how mine looks. 

Was that after running a load?

[SkylakeAlex6700k]

Just now, porina said:

Was that after running a load?

nope

[porina]

Just now, SkylakeAlex6700k said:

nope

Sorry, I should have said. Look at the clocks under load. There may still be some kind of power saving if it is idle.

[SkylakeAlex6700k]

Here's the cpu-z BTW. It's saying the range is up to 3.6 which is its turbo clock. but when I try and overclock, the ratio doesn't work and it stays at 36

[SkylakeAlex6700k]

3 hours ago, porina said:

Sorry, I should have said. Look at the clocks under load. There may still be some kind of power saving if it is idle.

Ok, new details I can underclock under the max turbo. So if i set it to 3.5ghz it sticks but anything above turbo doesn't.

[SkylakeAlex6700k]

55 minutes ago, SkylakeAlex6700k said:

Ok, new details I can underclock under the max turbo. So if i set it to 3.5ghz it sticks but anything above turbo doesn't.

More new info. Can base clock overclock. I turned the bclk to 115 and got my overclock back. this is a band-aid solution though.

[unclewebb]

Try setting your BCLK back to 100 MHz and then run ThrottleStop, open the FIVR window and see what your turbo multipliers are set to.  Can you adjust your Turbo Ratio Limits in there?

[zsaint87]

I had the same issue, and after an hour of searching on forums, I was able to fix to the issue, someone suggest to uninstall the windows update "kb4100347", I tried it, and it worked.