CPU runs at 800mhz when RAM is over clocked via XMP

Gary081871 · Apr 22, 2017

When I over clock my RAM using XMP in bios it locks my CPU at 800mhz, but when the RAM is stock clocked the CPU trturns to normal. Is this due to faulty RAM stick(s)?

I have tried using throttlestop, resetting CMOS, re-insert RAM, and updated all of my windows,gpu, and bios drivers. Nothing seems to get my RAM to the rated speed.

CPU:i7 7700K
GPU:GTX 1080 Ti
RAM

ual channel Dominator platinum 16gb DDR4 3000mhz
PSU:Hx750i PSU
MOBO:Asus Strix Z270G

krzyimprt · Apr 22, 2017

Gary081871 :

Intel speedstep will come into play regardless if your RAM is overclocked. Running CPU intensive apps the cores should be around 4200Mhz.

Gary081871 · Apr 22, 2017

krzyimprt :

Gary081871 :

Intel speedstep will come into play regardless if your RAM is overclocked. Running CPU intensive apps the cores should be around 4200Mhz.

Even when stress testing the CPU is at 800mhz on all cores.

Trun187 · Apr 28, 2017

gary im having the same issue as we speak. my 3200 ddr4 will not allow me to run it at that speed with a OC, instead i have to run it clocked at 2932mhz and it runs fine. i do have the same motherboard as you as well. im still working on it if i find something out ill let u know

Gary081871 · Apr 29, 2017

Trun187 :

Hey, I still have not found a solution. In the meantime I have resorted to running the RAM at 2133mhz and everything is working normally.

Trun187 · Apr 29, 2017

2932 is the highest i am able to do atm, if i try 3000 its the same thing =/

unclewebb · May 2, 2017

Did you try disabling BD PROCHOT in ThrottleStop? This is a signal path to your CPU. Disabling this signal path blocks outside throttling signals getting to your CPU. If this works or doesn't work, post a screenshot of ThrottleStop so I can see how you have the program setup.

Hobofish · May 27, 2017

Hey guys, I have the same issue as you guys and I'm also using the Asus Strix Z270G. Any solutions yet? Or just putting up with it for now?
Thanks

st3v30 · May 27, 2017

Try to manually set CPU ratio to x44 and disable turbo boost, you can leave voltage on Auto.

Hobofish · May 29, 2017

I did try manually setting the multiplier with no luck, the only fix I found for it was rolling back to an older BIOS. I'm currently on BIOS 0801 and that's fixed the issue for me. No problems using XMP on my Corsair LPX 3200mhz. Thanks anyway

Gary081871 · Jun 5, 2017

Hobofish :

How did you downgrade your bios? I think this may be a bios-specific issue with respect to Asus' Strix Z270G boards.

Hobofish · Jun 12, 2017

I just went to the Asus website and grabbed a copy of an older Bios and flashed the bios using a USB drive. Yes I think it's just an issue with the board and not so much with the CPU. Thanks

Trun187 · Jun 27, 2017

same for me as well had to go back to older BIOS

Trun187 · Sep 10, 2017

the newer BIOS 1009 i think it is has fixed the problem and is working again. This time i paid attention to the steps i did in order to get it working. Go into BIOS and set it for the 5ghz OC. Go and pick the XMP mem OC method then sync all cores to 48 BAM done...

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