cpu temps and behaviour

[Daemon Byte]

Now I know that folding is going to strain my computer. I expected that. But the behaviour of my machine seemed a little odd so I wanted to run it by here before I started taking it apart. Firstly the computer is primarily a work rig running a 2920x OC to 4.1ghz, a dark rock pro 4 cooler,  64gb of 3000mhz ram and a 1080ti. Now I have folding set to medium and left the rest alone. As soon as it started running my cpu jumped right up to 75 (70 is my fan curve's 100%) almost instantly. The back of my computer started to resemble a hair dryer. It then kept creeping up and up into the high 80s after about 15 minutes. When I paused folding it took seconds to get back down to 50. My GPU never went over 70 and tended to be around 67. So I decided to half the cores available to folding thus making my cpu usage appear as 50% in windows. Still shot up instantly to 75. So I tried 25% and it did it again. Yesterday I played doom eternal on highest settings at 2k and that put some strain on the cpu as well, billowing out heat from the back but never did the cpu go over 70. It averaged low 60 most of the time. 

So I'm thinking perhaps the cooler is sitting wrong but then I don't understand why it's only folding that spikes the temps so high and so fast. Nore, if the cooler is set wrong, would I expect it to come down so fast or blow out so much heat. Is it perhaps just to much for the cooler? It was the biggest air cooler I could get after Enermax's 360 aio gunked up on me and they're really the only decent aio option for a threadripper. 

[Gorgon]

That does seem high.  Might be a bad paste job or un-even mounting pressure.

 

Yes, Folding will stress your CPU, especially that 12c24t monster 

 

@Den-Fi what kind of temps do you get on your 2950 when CPU folding?

[Guest]

Just now, Gorgon said:

That does seem high.  Might be a bad paste job or un-even mounting pressure.

 

Yes, Folding will stress your CPU, especially that 12c24t monster 

 

@Den-Fi what kind of temps do you get on your 2950 when CPU folding?

I don't fold on it since it's in my main rig. I tried adding it just now to see, but who knows when I'll get a WU.

I do know from my 3970X that it can get up to 81C under water with PBO on, 70C w/o PBO.

[Gorgon]

Just now, Den-Fi said:

I don't fold on it since it's in my main rig. I tried adding it just now to see, but who knows when I'll get a WU.

I do know from my 3970X that it can get up to 81C under water with PBO on, 70C w/o PBO.

Yowza. All you need is a frying pan and some eggs and it would make you breakfast.

[Guest]

5 minutes ago, Gorgon said:

Yowza. All you need is a frying pan and some eggs and it would make you breakfast.

Oh wait, I as wrong. That was BOINC. Folding is 69C w/ PBO (about 4.1 all core, power plan min 100% CPU) on and I didn't measure it w/ PBO off.

[ykdave]

ive got my 3950x running at 70c loaded folding with a h150i, one fan set to extreme and one balanced so its not horribly loud whenever it gets a CPU wu

Id consider that reasonable temps, especially sustained without cranking the fans up, and even then within maybe 10 seconds itll jump from ~38c at idle to the 70c loaded where it levels out

[Daemon Byte]

ok I'm getting the feeling the rapid increase is normal although I am still surprised it does it at 25. I think for my peace of mind I'll leave it just running on the gpu for now and get myself some good thermal paste and try repasting it.

Thanks all

[Daemon Byte]

Just in case anyone finds this thread with a similar problem, I found my solution was to get rid of AMD's overclocking tool's settings and put in some I found on overclock.net. The tool had set it to 4.1ghz at 1.4v.  I'm not using 4.0ghz at 1.26v and that's running much better. Even running 24 threads on prime 95 the dark rock pro is keeping me under 80 degrees.