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8600k at 5GHz in Asrock Z370 Extreme4. Power throttling??

xSydBx

xSydBx

xSydBx

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8 Feb 2023
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Hi, after playing a bit with my 8600k I've managed to reach the 5GHz mark keeping temps and voltage within safe values (around 80ºC and below 1.350v), however, I suffer from a huge thermal throttling that downclocks the cpu close to 3.6GHz. I am including here the results of HWinfo64 at the 15 min mark while running Prime95 small FFT (https://imgur.com/RXVkjvN). You can see that the cpu doesn't keep up with stable 5 GHz with my current config: all core cpu ratio 50, cpu cache ratio 45, PL1 120, PL2 150, offset 140mv and LLC2. I believe the reason are the power limits I've set, lowering the clock (yellow highlighting) when too much power is withdrawn.

An idea to solve this throttling, was to rise the cpu thermal throttle temperature to a max of 90ºC, and then setting the new PL1 with the value of power used at that temp. However, I cannot find that setting in my BIOS. Here are the options I'm able to modify and my current config: https://imgur.com/fTzOReh

Can someone please help telling me if my approach is correct / I am able to do it / how to do it? Thanks a lot!!!!

PC: i5-8600k, Asrock z370 Extreme 4, 2x16gb ddr4 Crucial Ballistix 3600 CL16, PSU Corsair RM650x, Noctua nh-d14, 2xSamsung Evo 850 500gb ssd, case Corsair c70.
 
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How can I tell if is VRM thermal throttling? I'm in the process of learning about oc and I'm not sure. The only thing I can see regarding VRM info is the VRloop sensor and I believe the temperatures there are fine (check my first pic). Correct me if I'm wrong, please.
Thanks
 
tamzzy said:
is it the cpu thermal throttling or the VRMs thermal throttling?
Click to expand...
After looking at the first screenshot the vr vcc is only hitting 66c. thats the vrm. add maybe 5c to that for safety and your well within vrm temps.

You need to increase long and short power limit in second screenshot to 250 for both and that will stop power limit throttling. However that can introduce thermal throttling if temps go above 90c. Also prime95 is overkill for cpu stress test as it pushes your cpu well above normal loads.
 
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I think I have "destroyed?" my PC :mad::(:confused:!! Yesterday, I was observing that my voltage was going up to 1.37/1.38v while gaming with the previous stable settings I had (exactly the same ones I linked in my OP, with max Prime95 vcore under load of 1.344v and max temp under load of 79/81ºC). I had those settings saved in one of my bios saved profiles and, basically, I've been reverting to that profile each time I wasn't happy with the changes I was doing along the way. Well, after reading about cases in which the new bios settings were not being updated properly (I thought that was happening as the voltages were rising over the stablished max with Prime95), I decided to select LOAD BIOS DEFAULTS and restart the PC with the idea of setting the profile from zero and saving it again. Something as simple as that, but now... well..., now I have no splash screen whatsoever, no windows booting,... nothing.

The things that I have tried are:
  • Connect several monitors with HDMI, DP and even VGA to the different ports of my GPU an the integrated GPU from the i5 8600k.
  • Swap GPU from older pc
  • Swap PSU
  • Disconnect everything from the mobo leaving only CPU and ram
  • Remove one ram stick once at a time
  • Remove all ram sticks and confirm I can hear the mobo beep codes
I honestly don't know if I have fried my CPU, destroyed the mobo... or if there's something else that I'm not able to identify. I just know yesterday was my fxxking bday and the day didn't end up as I expected when I woke up in the morning.

Any ideas? PLEASE
 
I've done that already, just forgot to write it in the stuff I've tried... I've even closed the bridge with a screwdriver (can't find the jumper)
 
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I have tried both of those things as well. I can't see any image with the external gpu removed when i connect the monitor (i've tried with 2 different monitors) to the mobo hdmi/dvi/vga ports (and yes, my 8600k has an integrated gpu). The mobo speaker is connected correctly, that's why I can hear the beeps when no ram is present.
 
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tamzzy said:
ah ok, when it's just cpu/mobo/ram what beep code do you hear?
Click to expand...
with no ram i hear sequences of 3 beeps each one. I haven't tried with no cpu though
tamzzy said:
8600k safe voltage is < 1.4v and < 1.35v for daily usage
doesn't look like you exceeded these?
Click to expand...
yep, i was keeping the vcore within safe margins. that's why i cannot understand what the hell happened :(
 
xSydBx said:
with no ram i hear sequences of 3 beeps each one. I haven't tried with no cpu though
Click to expand...

ASRock motherboards​

  • Short and constant beeps: error with RAM memory refresh.
  • Two short beeps: RAM parity error.
  • Three short beeps: RAM read / write test failed.
  • Four short beeps: system clock error.
  • Five short beeps: CPU error.
  • Six short beeps: keyboard controller error, or keyboard not detected.
  • Seven short beeps – General error, usually due to CPU or RAM.
  • Eight short beeps: graphics card error, check that it is installed correctly and that the power cables are connected.
  • Nine short beeps: ROM error. A Clear CMOS generally does not solve.
  • Ten short beeps: ROM read / write error. A Clear CMOS could fix it.
  • Eleven short beeps: CPU cache check failed.
 
tamzzy said:
what about with cpu/mobo/ram? (just the core components and everything else removed)
Click to expand...
The same happens when only ram and cpu are connected to mobo
tamzzy said:

ASRock motherboards​

  • Short and constant beeps: error with RAM memory refresh.
  • Two short beeps: RAM parity error.
  • Three short beeps: RAM read / write test failed.
  • Four short beeps: system clock error.
  • Five short beeps: CPU error.
  • Six short beeps: keyboard controller error, or keyboard not detected.
  • Seven short beeps – General error, usually due to CPU or RAM.
  • Eight short beeps: graphics card error, check that it is installed correctly and that the power cables are connected.
  • Nine short beeps: ROM error. A Clear CMOS generally does not solve.
  • Ten short beeps: ROM read / write error. A Clear CMOS could fix it.
  • Eleven short beeps: CPU cache check failed.
Click to expand...
Yep, there were 3 short beeps only when ram was removed. No more beeps in any other scenario i've tested
 
xSydBx said:
The same happens when only ram and cpu are connected to mobo

Yep, there were 3 short beeps only when ram was removed. No more beeps in any other scenario i've tested
Click to expand...
just humour me...start the pc then disconnect the hdmi cable and then reconnect it again with the pc still on
 
tamzzy said:
just humour me...start the pc then disconnect the hdmi cable and then reconnect it again with the pc still on
Click to expand...
Thanks for the suggestion. But that's one of the first things I tried before going deeper into the diagnosis. The pc is also connected to the electrical socket and I've pressed the on/off button lol
 
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