CPU Mhz dropping from 3408Mhz down to a stedy 1397Mhz

banditblaze22 · May 21, 2018

My Pc started to Lag really bad recently can’t tell exactly what it is but mainly in games general browsing and videos seem to be fine it’s just these CPU intensive games like Ark Survival. according to CPU-Z it keeps jumping randomly from 3408Mhz down to a steady 1397Mhz.

I tried: -
Clearing the Bios and CMOS
Cleaning my pc from temp, defrag all the way down to scanning my pc for viruses
Replaced the thermal paste
Re seated the CPU
Refreshed windows
Changed windows CPU power management to 100%
Disabled Cool and Quiet

Im starting to think that either its my psu or a faulty cooler, it used to be at a steady 60-65C under load but now its gone up to 77 the case i got was mainly for airflow but did not have the time to look up reviews on it which i regret, but id like to believe its doing a good job. Current room temps have gone up too but not to mention i did have graphic issues in the past which makes me suspect the PSU watts.

My Specs are:
Case: NZXT H series H440 Mid tower
Mo/Bo: AsRock Fatality Performance/3.1
CPU: FX 8120 Zambezi Black Edition
Cooler: Corsair H100i
GPU: Amd R9 390x
SSD: Samsung Evo SSD
PSU Antec 620W

These are the temps when its idle it was at 77 then dropped http://prntscr.com/jkmkxe

justin.m.beauvais · May 21, 2018

If you are having problems with various components the PSU is a pretty safe bet, however, the CPU temps thing bothers me. Unless the lack of juice from the PSU is impacting the function of the pump and/or fans, you might have a problem there too. Do you have an air cooler you can throw on there to see if it is a cooling issue? It actually isn't a bad idea to just have one sitting around just in case you have an issue with your AIO.

banditblaze22 · May 21, 2018

justin.m.beauvais :

Its what im starting to assume too, just strange as it worked fine all this time and suddenly goes slomo on me. I guess that's just electronics

, i don't remember where i put the original cooler but i try find it and post back moment i get hold of it.

mdd1963 · May 21, 2018

Frequently, AIOs ironically help contribute to thermal throttling of the mainboard, as since there is now no CPU fan blowing residual air across the motherboard, the motherboard's VRM circuitry now heats to dangerous levels. Try blowing a simple case fan across the mainboard's power regulation circuitry...

justin.m.beauvais · May 22, 2018

It is my opinion that liquid cooling is not the "bees knees", as it were. If your CPU runs hot, like i9 hot, and you don't have optimum conditions, like an air conditioned home or office, eventually the water will warm and it will get to the point that the thermal transfer is unable to move the heat properly as the warm water and hot CPU end up creating a runaway temp spike that will not only throttle the CPU but keep heat on it. It will be the same as in your car the cooling system fails.

I really good air cooler, and I'm talking about something that is rated for over a 200w TDP will simply not be overwhelmed like that. In situations where your water loop becomes a tea kettle, a 250w rated air cooler will have no issues. Unless you are operating outside in 40C+ heat you'll be fine on air.

I recently saw a video where a guy tried testing the TDP of different AIO water coolers since they aren't normally rated that way, and he came to the conclusion that most were in the 150W TDP range... which is not that impressive. An overclocked i7 or i9 under load in a relatively warm room could overwhelm these AIO coolers if given enough time. A good air cooler won't.

That said, most of the time a liquid cooling loop will be fine and looks totes sick bro, but it is something to consider.

ElectrO_90 · May 22, 2018

Read about the h100i failures, they are common.

ElectrO_90 · May 22, 2018

justin.m.beauvais :

It is my opinion that liquid cooling is not the "bees knees", as it were. If your CPU runs hot, like i9 hot, and you don't have optimum conditions, like an air conditioned home or office, eventually the water will warm and it will get to the point that the thermal transfer is unable to move the heat properly as the warm water and hot CPU end up creating a runaway temp spike that will not only throttle the CPU but keep heat on it. It will be the same as in your car the cooling system fails.

I really good air cooler, and I'm talking about something that is rated for over a 200w TDP will simply not be overwhelmed like that. In situations where your water loop becomes a tea kettle, a 250w rated air cooler will have no issues. Unless you are operating outside in 40C+ heat you'll be fine on air.

I recently saw a video where a guy tried testing the TDP of different AIO water coolers since they aren't normally rated that way, and he came to the conclusion that most were in the 150W TDP range... which is not that impressive. An overclocked i7 or i9 under load in a relatively warm room could overwhelm these AIO coolers if given enough time. A good air cooler won't.

That said, most of the time a liquid cooling loop will be fine and looks totes sick bro, but it is something to consider.

Yes the guy you are talking about in theory was correct,but failed in so many other aspects.
I run my AIO and computer 24/7 I live in a country where the AMBIENT temperature is 34'C in my house.
My CPU never gets over 55'C.

justin.m.beauvais · May 22, 2018

ElectrO_90 :

justin.m.beauvais :

Yes the guy you are talking about in theory was correct,but failed in so many other aspects.
I run my AIO and computer 24/7 I live in a country where the AMBIENT temperature is 34'C in my house.
My CPU never gets over 55'C.

In any case, thermal runaway on a water cooler is unlikely, but more probable than on air cooling. That said, you probably don't have a 16 core CPU overclocked to 4.5 GHz and drawing over 300W. Those things are toasty, and also are the edge cases where thermal runaway exits the world of theory and enters the world of real possibility. For a 7700K or 8700K, you'll probably never have a problem.

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