[Solved] Need help in Overclocking, My cpu locks at stock freqs

[lyndonguitar]

I have an Z370 Aorus gaming 5 and an intel core 8700k. I kinda followed this Guide in overclocking. and this

the only difference is that I started from lower multipliers and voltages. However my problem is that once I try to overclock(set multiplier to 45, 46, 47, etc). it displays the correct freqs in the BIOS, with correct voltages and normal temps, but in windows(Cpu-Z, task manager) At startup it displays the correct freq for a few seconds then forever locks at 4.3GHz. it just sits at 4.3GHz all cores. Sometimes it will luck out and stays at the target frequency e.g. 4.8GHz (with normal temps)

I thought it's throttling but the temps are good, and it's just idle anyway. I checked power options, max processor is set to 100%. Any ideas what might be causing this?

 

[R00kie]

You need to load the CPU up, otherwise the frequency will fluctuate, that's SpeedStep doing its thing.

 

[lyndonguitar]

You need to load the CPU up, otherwise the frequency will fluctuate, that's SpeedStep doing its thing.

I tried loading it. still 4300MHz locked

 

[R00kie]

I tried loading it. still 4300MHz locked

Then its probably not the All-Core Turbo that you set, go back to the BIOS and see if there are any other multiplier options. Gigabyte's BIOS was always finicky in this regard, even on my X99 board.

 

[lyndonguitar]

I reset the BIOS to default and at stock settings it is even performing BETTER. it reaches to around 4500MHz all cores constantly. WIll try and tinker arond

 

[lyndonguitar]

I likely found the culprit, seems that turning on XMP(2133MHz to 2666MHz) is causing the lock up to 4.3GHz allcores. Turning it off and running at 2133MHz fixed the locking up(for clockspeed). Will try to overclock again without XMP. silly Corsair Vengeance Ram

EDIT: Nvm I tried OC'ng to 4.8GHz. windows starts up displays 4.8GHz all cores, then suddenly goes to 4.3GHz again after a few seconds

 

[P4-630]

I tried OC'ng to 4.8GHz. windows starts up displays 4.8GHz all cores, then suddenly goes to 4.3GHz again after a few seconds

When idle probably? You may have speedstep etc, enabled?
What happens when you play a game or run a benchmark?

How are the CPU temperatures?

 

[lyndonguitar]

When idle probably? You may have speedstep etc, enabled?
What happens when you play a game or run a benchmark?

How are the CPU temperatures?

At stock BIOS settings 70C full load at Realbench stresstest. it locks to 4.3GHz, it uses all cores. this is expected because it is to run 6 cores @4.3Ghz. without realbench running the speed jumps around from 3.7 to 4.7GHz

as soon as I try to OC(speedstep, etc, disabled) after starting up windows it displays target speed(e.g. 4.7GHz all cores) for a few seconds and then locks to 4.3GHz, just like above. even without running realbench. sometimes it will Finally lock up on 4.7GHz and stay that way.

Its liek I bought a non-K Chip

 

[P4-630]

What if you try XTU?
https://downloadcenter.intel.com/download/24075/Intel-Extreme-Tuning-Utility-Intel-XTU-

 

[lyndonguitar]

What if you try XTU?
https://downloadcenter.intel.com/download/24075/Intel-Extreme-Tuning-Utility-Intel-XTU-

Will do, thanks

 

[lyndonguitar]

Seems to have solved the locking up. Just tried 4.7GHz all cores and it sets it easily without ever returning to 4.3GHz. this is in default BIOS settings.

I can just control the multiplier/voltage here in XTU and not in the BIOS?

 

[EarthDog]

Leave speedstep and turbo on, etc...clearly its a setting in the bios preventing it since it works through xtu.

 

[lyndonguitar]

I disabled speedshifting(same as speed step I Guess) and anything that reduces the freqs so I get a more stable system with a static voltage. I changed the voltage+multiplier in the XTU. I'm now @4.8GHz all cores testing for stability. thanks guys!

Can I also do an overclock where 1-2 core goes 5GHz. 4cores 4.9Ghz, 6 cores 4.8Ghz? is there any benefit to it?(more stable, less power, heat, etc)

 

[EarthDog]

Software... the easy way out.

If you leave that stuff enabled and switch to high performamce plan, it will hold clocks and voltage.

You can do per core clocking, sure. I dont see a reason why though.

 

[P4-630]

I disabled speedshifting(same as speed step I Guess) and anything that reduces the freqs so I get a more stable system with a static voltage. I changed the voltage+multiplier in the XTU. I'm now @4.8GHz all cores testing for stability. thanks guys!

Can I also do an overclock where 1-2 core goes 5GHz. 4cores 4.9Ghz, 6 cores 4.8Ghz? is there any benefit to it?(more stable, less power, heat, etc)

If it worked properly with the BIOS I'd prefer that but with XTU isn't that bad, just let it run on startup.
Enjoy your rig!!

 

[lyndonguitar]

I'd prefer it work on the BIOS too, im still finding solutions, but glad to see that my chip isn't the problem

 

[lyndonguitar]

I forced enabled the Intel Turbo Boost and set all cores 1core 2core 3core 4core 5core and 6core to 48. Left out the initial multiplier to Auto. It worked. I got the Idea from the XTU software. weird that this isn't what the guide told me to do(told me to set the multiplier)

 

[P4-630]

I'd prefer it work on the BIOS too, im still finding solutions, but glad to see that my chip isn't the problem

It might work properly with a future BIOS update.

Edit:

I forced enabled the Intel Turbo Boost and set all cores 1core 2core 3core 4core 5core and 6core to 48. Left out the initial multiplier to Auto. It worked. I got the Idea from the XTU software. weird that this isn't what the guide told me to do(told me to set the multiplier)

Nice!!!

 

[EarthDog]

The bios isnt the issue gents..

 

[lyndonguitar]

Here we go again, it suddenly drops the clock to 4.3Ghz at some boot ups. so sometimes the BIOS applies the OC into windows, sometimes not.

EDIT: I'm Gonna Flash the BIOS

 

[EarthDog]

Please host some screenshots of your bios here...f12 will capture image on usb, then host here.

You are on the latest bios, right?

 

[lyndonguitar]

updating the bios fixed the damn issue. i was on F2 version which was on release, I got the latest F3 which is only 1 month ahead(chipset is new afterall), fixed the problem. never bothered to update before because when i read the update notes and it only mentioned some VGA fix, I guess the re-flashing fixed it or the actual update had a fix