AMD8350 running hot on stock speeds!

Michelmoel · Apr 17, 2014

Hi guys

My Amd FX-8350 is running hot a stock speeds with this aftermaket cooler https://www.komplett.no/cooler-master-hyper-tx3-evo-cpu-kjler/657094

If i leav my pc on idle for 30 mins its temperature is 36C, but if i run Prime95 at stock speed it goes straight up to 62-64C.

My rig is

ASUS M5A99FX PRO R2.0
AMD FX-8350
8GB 1600MhZ RAM
Samsung 830, 120gb SSD
Silver Power SP-S850 850W PSU

Is there anyhting i can change in bios? cool and quiet is enabled btw

Nerumph · Apr 17, 2014

Do you have any more thermal compound left? You may want to re-spread it between your CPU and cooler to ensure that you have adequate contact with the core components. Remember to clean the residue from the last batch of compound on both the heatsink and cpu with Isopro Alcohol and a lint - free / microfiber cloth.

Quite honestly, though, those temps seem fairly okey for an AMD cpu. Keep in mind prime 95 is meant to put the cpu under above average working loads. If you look at your threads in task manager, they should be somewhere above 70% while running the test.

If you are really concerned about the temps, however, you can use speedfan or CPU-Z to increase the fan speed a bit; or alot... your preference really.

paitjsu sadff · Apr 17, 2014

i wouldn't worry about those temps, prime95 is good to test stability of your overclocks but i would avoid running it for more then 15 minutes, if no core fails within 15 minutes your CPU is stable and you can delete prime95 after that and never worry again...it is normal that even on stock speed the CPU gets hot under those torture test but in real life no workloads from any applications or games you can use will ever reach such high temps as they do under prime. If you're not too sure if the termal paste was applied correctly it could be a good idea to clean and redo as stated above...just in case, but other than that i wouldn't worry to much about prime temps...if you get in the 60c playing BF4 for example then this is a concern as it should hover around 48c - 50c max with this cooler you have and stock speed

Michelmoel · Apr 17, 2014

Nerumph :

Thanks for your reply,

I have used the right amount of thermal paste ( Arctic mx2 ) that im sure on!
When i run the prime95, all 8 cores run at 100% not 70%

Michelmoel · Apr 17, 2014

paitjsu sadff :

i wouldn't worry about those temps, prime95 is good to test stability of your overclocks but i would avoid running it for more then 15 minutes, if no core fails within 15 minutes your CPU is stable and you can delete prime95 after that and never worry again...it is normal that even on stock speed the CPU gets hot under those torture test but in real life no workloads from any applications or games you can use will ever reach such high temps as they do under prime. If you're not too sure if the termal paste was applied correctly it could be a good idea to clean and redo as stated above...just in case, but other than that i wouldn't worry to much about prime temps...if you get in the 60c playing BF4 for example then this is a concern as it should hover around 48c - 50c max with this cooler you have and stock speed

I played Dota2 and WoT today while HWmonitor ran in the backround, max temp was 59C

Michelmoel · Apr 17, 2014

paitjsu sadff :

i wouldn't worry about those temps, prime95 is good to test stability of your overclocks but i would avoid running it for more then 15 minutes, if no core fails within 15 minutes your CPU is stable and you can delete prime95 after that and never worry again...it is normal that even on stock speed the CPU gets hot under those torture test but in real life no workloads from any applications or games you can use will ever reach such high temps as they do under prime. If you're not too sure if the termal paste was applied correctly it could be a good idea to clean and redo as stated above...just in case, but other than that i wouldn't worry to much about prime temps...if you get in the 60c playing BF4 for example then this is a concern as it should hover around 48c - 50c max with this cooler you have and stock speed

I played Dota2 and WoT today while HWmonitor ran in the backround, max temp was 59C

Nerumph · Apr 17, 2014

Michelmoel :

Ya, I did mean anything above 70% would be normal for that program. Again you have to remember, CPU's are built to take quite alot of heat before they get anywhere near critical. Also keep in mind that there is a heat dissipation curve in relation to these temperatures, so starting at an ambient room temp boot, it will seem like it is climbing rapidly, but really, it is getting to stock temps.

Think of it as a car engine warming up in other words. Also, your cooling solution will also be set on a dissipation curve to not waste power and create excess noise.

Essentially, the hotter your CPU gets, the more your cooling products will kick in to keep the temps down.

I hope this has helped you understand a bit more. I know for me the idea of my CPU getting about 70*C was a frightening thought... that is until I found out that is where a CPU loves to be, running hot and efficient.

paitjsu sadff · Apr 17, 2014

Michelmoel :

well Michel those temps are kind of high...do you have somewhat good ventilation in your case like at least a good 120mm intake fan and 120mm exaust fan? also is the case crowded with wires and/or dust? if it's all clean and well ventilated then you should remove you cooler, clean it out carefully and re-apply thermal paste (artic if possible or any other good quality paste) if the temps are still that high after this operation is done correctly i would recommand an after market heatsink, the 29$ cooler master hyper 212 (EVO or PLUS both are fine..) will keep this chip cool and even allow for great overclocking if you wish to do that...here's the link to the cpu cooler and good paste:

http://pcpartpicker.com/part/cooler-master-cpu-cooler-rr212e20pkr2

http://www.newegg.com/Product/Product.aspx?Item=N82E16835100017

Here's a quick tutorial video on how to apply your thermal paste look at the entire video if possible but most important at exactly 1:45 this is the best way to do it, look how good it covers the CPU and no air bubbles :

https://www.youtube.com/watch?v=-hNgFNH7zhQ

Pay attention not to drop any paste in the side of the socket or on your motherboard and you'll be just fine

I have my FX-8320 overclocked to 4.4ghz under a hyper 212 cooler and my max temps are 55c under prime and 47c while gaming...standard case 1 exaust fan and 1 intake fan...also you will realise that the hyper 212 is so MUCH more quiet than the stock heatsink, just for that reason it would be worth it you upgrade the great low temps is only a bonus IMHO

Michelmoel · Apr 18, 2014

Thanks alot guys

I have just bought the Noctua NH-D14 CPU Kjøler and two 120mm case fans that im gonna use as intake and exhaust!
Also bought a 92mm fan for my sidepanel, hope this will keep everything cool and maybe let me overclock alittle

Thanks again

paitjsu sadff · Apr 18, 2014

it should...nice decision, going with an aftrmarket heatsink on these is always a good idea! have fun!

Michelmoel · Apr 18, 2014

paitjsu sadff :

Thanks,

Yeah hope everything runs cool and well, ill post some pictures when im done with my rig, thanks for your help man !

paitjsu sadff · Apr 18, 2014

No problem! Yes please do i always enjoy looking at a completed rig !

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