i7-6700k Underclocking itself to 0.80 GHz

ShaftRaptor · Jul 15, 2016

For some reason my CPU is under clocking itself to 0.80 GHz and I have no idea how to fix it. It's not being thermal throttled since it's not under load.

Ecky · Jul 15, 2016

You mean when you're not using it, it's not running at high voltage and clockspeed, but rather clocks down to save energy, and then clocks up when you need it?

Normal behavior.

ShaftRaptor · Jul 15, 2016

Ecky :

No I mean that my CPU is running at .80 GHz all the time, even under load. Also I have no idea why it selected you answer as the best answer.

Ecky · Jul 15, 2016

Check that your Windows power profile isn't set to "power saver". Balanced is best.

ShaftRaptor · Jul 15, 2016

Ecky :

Already tried this, it's not. Is there anyway to just manually go in and set my CPU speed? Because currently my BIOS says that the CPU speed is at 0.80 GHz

Ecky · Jul 16, 2016

Try resetting bios to default settings?

ShaftRaptor · Jul 16, 2016

Ecky :

Yep I pulled the battery from the motherboard too.

Ecky · Jul 16, 2016

If you have a Z170 board, you should be able to manually set the multiplier. Setting all 4 cores to 40x or 42x with default voltage should work fine.

ShaftRaptor · Jul 16, 2016

Ecky :

Through the BIOS?

Ecky · Jul 16, 2016

Yeah. You could also download Intel's Extreme Tuning Utility in Windows and see if that works for you.

MeanMachine41 · Jul 16, 2016

Quite a few things can be the cause ShaftRaptor. Please list your full system specs.

1. PSU not providing acceptable rail voltage. Use HWMonitor to check voltages under load. Stress test recommended.

2. Incorrect settings in Bios. Power management feature enabled. List your MB for correct recommended settings.
Could also need a Bios update.

3. Excessive heat due to high core voltage. Probably not in your case if temps at idle are OK. Have you OCed.?

4. Intel skylake bug that can often reveal itself when using P95. Probably fixed with latest version of P95 but can happen with other high load apps.

5. MB VRMs overheating which can cause throttling.

6. Some MBs have LN2 slow mode switch which if switched on will result in slow mode.

7. Power Plan settings in Windows not set to performance mode.

A dud CPU. RMA the CPU. Yet to be established.
A dud MB. RMA the MB. Yet to be established.

Check all the above and report back please.

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i7-6700k Underclocking itself to 0.80 GHz

ShaftRaptor

Commendable

Ecky

Ecky

Illustrious

ShaftRaptor

Commendable

Ecky

Illustrious

ShaftRaptor

Commendable

Ecky

Illustrious

ShaftRaptor

Commendable

Ecky

Illustrious

ShaftRaptor

Commendable

Ecky

Illustrious

MeanMachine41

Judicious

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