CPU Throttling at high temps

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Draganno

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Jun 9, 2014
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Specs:
CPU: AMD FX-8150
GPU: GTX 960 4gb
MOBO: Asus M5A78L-M/USB3
RAM: 12gb

So i've had this weird and annoying problem for a while now.
The CPU works fine, plays all games at the beloved 60-70 fps.
But with better/new games, which take more, GPU and CPU power or something, the fps drops to 20 fps for a short amount of time. Long enough to notice it. Certainly long enough to get annoyed by it. I've done some research and found I should disable some stuff in the bios.
Like c6 state
AMD turbo core
cool 'n' quite
All that stuff is OFF.
Also, what i've figured out, is that it happens when the temps reach too high, about 61 degrees.
It reaches 61 barely in Dark Souls 3, but when It does, the cpu usage drops to about 20% and the speed drops to 1.20 while it is normally at 3.6.
I've removed the heatsink, added new thermal paste, fixed a few fans that weren't working, still to no avail. I'm using an antec liquid cooler 650 If i'm correct.
Also i've done some CPU load things, so it reaches 100% usage. After letting that sit for about 1 minute, maybe less, it goes from 100% to 30%. so the same as when playing a game. It changed when the temps reached about 67 degrees. In the time it is at 30% the temps reach back to 50 degrees and sometimes lower. When it goes back to 100% the temps reach 67 degrees again. The process repeats. So i'm guessing its a thermal problem, but I can't find any solutions for it, and since it only reaches 61, i'd to turn it all OFF. If that's even possible.

Thanks in advanced!
 
Solution
Ryan_78
1. Your motherboard is throttling the CPU. That's a 6 phase board and is not recommended for 125w chips. Get a better board like the ga-970a ud3/p or the 970 gaming board. Those are 10 phase boards and can deliver enough power to your system.
2. 61C isn't bad. Bulldozer is somewhere between 62-70C. I know thuban was 62C. Anyways I don't think CPU temps are the culprit.
3. Check VRM temps are they overheating.
4. PSU should be no problem unless you have a CX 430
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Ryan_78

Ryan_78

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1. Your motherboard is throttling the CPU. That's a 6 phase board and is not recommended for 125w chips. Get a better board like the ga-970a ud3/p or the 970 gaming board. Those are 10 phase boards and can deliver enough power to your system.
2. 61C isn't bad. Bulldozer is somewhere between 62-70C. I know thuban was 62C. Anyways I don't think CPU temps are the culprit.
3. Check VRM temps are they overheating.
4. PSU should be no problem unless you have a CX 430
 
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Solution
Shaun o

Shaun o

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Oct 7, 2007
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An FX 8150 cpu used the old bulldozer core.

It was the first generation of FX based cpus in the four, six or eight core design.
It was less power efficient as the other poster said and ran much hotter in temps than a 8350 eight core Vishera based FX cpu.
And yes it was known to throttle when any sort of over clocking was applied to it and any cpu core voltage increase.

If I were to be honest with you Draganno, you would be better buying a FX 8320 Vishera based cpu core processor to resolve your cpu heat problems and thermal throttle lowering the clock speed the cpu is running at causing poor performance.

You will likely find that the FX 8150 cpu you currently have is running between 1200 Mhz or 800 Mhz as it gets hot.
And why you are getting such bad frame rate drops when you begin to play a game or after a few minuets of play even with a GTX 960 4gb edition graphics card in your system.

Your only other option is if you are using the Amd stock cooler that came with your FX 8150 cpu is to buy a better aftermarket cooler to do a better job of keeping the cpu cooler so it does not thermal throttle something like an Evo 212 cpu cooler.

 
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Draganno

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As said in the post, I have liquid cooling.
I'd think it would be my MOBO being old or something.
Im short on money, so i'd better got for a new MOBO than a new CPU.
But thanks anyways, certainly not a bad answer!
 
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Draganno

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Thanks for your quick answer!
This would be the next thing i'd do!
Thanks for the new MOBO's as well.

Only, in the past, i can't remember having this problem.
Can I maybe reduce voltage for the cpu, so it wouldnt be doing this anymore?
It's not overclocked by the way.
 
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Ryan_78

Ryan_78

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Try 1.35. It's less than the stock 1.38. Anyways, undervolt in isn't bad. Make sure your system is stable though. Voltage change may cause instability.
And because of the stress, the components will wear out. That's why it occurs now.
And VRM temps? Try undervolting, but make sure it's 100% stable. Also make sure you have adequate VRM cooling.
 
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Draganno

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I still have to check those, I just don't know exactly what the VRM temps are? :??:
Sorry about that. But i'll check the undervolting for as much as I know how to do that!
 
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Draganno

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There are different kinds of VRM temps as I searched the internet.
GPU temps are fine, never go over 60, but forgot to check that one though, not that is matters. This card works fine :D
But the temps on the motherboard seem to go to about 70-75 while gaming.
50-55 while idle.
So is that what you wanted? It doesnt seem to be too hot to be honest. It is the highest temp though.
 
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Ryan_78

Ryan_78

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Motherboards have VRM, or voltage regulator modules, hence the phases. More phases mean better power. Means better vrms. Anyways look at speedfan or HWMonitor and check what temp 1, temp 2 and temp 3 readings. 3 is socket, 1 or 2 is the VRM. Send a screenshot of those values. Under load if you can.
 
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Draganno

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This is while IDLE:
http://

This is while under CPU LOAD: (Using FurMark "CPU Burner")
http://

This is while the CPU Throttles while under the heavy load
http://

Hope this was all u needed!

(I dont know why the links look so weird, but they DO work)
((In the task manager on my other screen, which is not on the pics, it showed the drop from 100% to 30% while it was throttling))
 
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Ryan_78

Ryan_78

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this seems like your VRMs are heating up big time. 65C isn't very god for your VRMs. you want to place a fan over the strip of metal beside the socket,. anyways its this
qeozud9.png


that is overheating badly. causeing throttling of power and also you CPU is too hot. the Package means the hottest core. and 69C is slightly too hot for AMD. try putting your cooler on 100% blast.

no wonder. it doesn't even have VRM heatsinks!
 
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Draganno

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I don't think I'd be able to do that sadly :/
There's only one option for me in the bios, and that's to put the fan on turbo mode or something.
I use liquid cooling with push/pull configuration. And only one more fan on the front of my case...
I've done the most I can do for the cooling at the moment i think...
Do keep in mind that it only reaches 61 degrees when gaming. This means not a 100% load.
I know it shouldn't either way, but nothing I can change about that sadly...
 
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madmatt30

madmatt30

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Your CPU is overheating because you're using a water cooler.

There's a 20c difference between socket & core temp in those idle readings .
That's because you're vrm's are hot & are overinflating CPU temps too
The Asus isn't a bad little board & will run an 8 core with sufficient cooling on both GPU & board - while you're running that water cooler you will always have this problem though.

You've got 2 options , ones to chsngevtgat aio for a good downblower, the other us to disable 2 cores in bios turning that chip into a 6 core.

Either way re-enable c6 & cool & quiet - having those disabled is making the problem worse not better.

BTW that speccy mb temp is relating to socket temp , the mb itself has no actual temp sensors.

 
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Draganno

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Thanks for your answer!
Would this be fixed when i'd buy a new MOBO?
Because it's quite outdated already. And I don't feel like buying new cooling.
This sure was helpful, thanks a lot!
 
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Ryan_78

Ryan_78

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Then point a huge 120mm fan at the vrms and rev the fans up to 100% on the cooler. It's the least you can do. The board is what 6 phase, it's okay for a 125w chip.
But I mean as madmatt says enable power saving features, and ten you can disable some cores. But another option is to get a tower cooler like the cryorig h7 or madmatts favorite budget cooler in the uk (you know what I am talking anout) and then make some homemade heatsinks for the vrms.
 
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