NP8671 , CPU temps over 90C

I am doing some 3D rendering that is multi-threaded. All 4 cores of my i7 are at 100% when this process is running. After about 3 min of this I'm seeing temps on some cores peak at 91C. Ambient temps 70F, notebook elevated on a notebook cooler, specs in sig.

I'm not entirely surprised here because all the cores are maxed. I'm thinking I might try to force the CPU fan to 100%. Anything else you guys can think of? I'm using HW Monitor to measure temps.

 

If you're seeing them top out at 91C while under load you're still safe, but not ideal. Did you get better thermal compound like IC Diamond or was it the stock. Using a better thermal compound can help drop those 1-5C lower.

 

Repaste or turn off turbo boost.

 

While benching, my CPU in coretemp shows 95 degrees max and a 58 W maximum TDP, but it seems to be perfectly stable albeit not too ideal. When I render (only simple rendering in Solidworks) the TDP is usually around 30-40 watts and I average 80 degrees on auto fans, so I'd say try and see if you can repaste. (Gelid GC Extreme and IC Diamond are what I use) If this is the maximum workload you will put on the CPU, I'd say be wary of temperatures but you should be fine for a short duration if you don't have thermal paste readily available.

 

Repaste is what I would recommend.. Did you have it pasted with IC Diamond when you bought it? If not, repaste it with IC Diamond/Gelid GC Extreme..

As for turning off turbo boost, I'll personally shoot the next person who suggests that.. Really turning off turbo boost? Why not just turn of your entire laptop? Turning off turbo boost massively nerfs the CPU's performance... Honestly most stupid suggestion ever...

 

Turning off turbo keeps my laptop out of peaking into 90's and barely peaking over 80*.

 

Hmmm... none of these options seem good :/ Darn well I'm going to try to work some magic in the BIOS. I think maxing the fan out is a viable option, I just want to get into the 80s.

My personal opinion is that the laptop can handle this, its just that the CPU is hit out of nowhere with 100% load on all cores, so it takes the fan a few seconds to react, thus the huge increase in temps. If the fan was maxed to begin with my bet it I could shave off 5-10 C on the temps. This approach as worked with GFX cards for me in the past, and I don't mind a little extra fan noise.

Any apps for Win8 that enable manual control of the CPU fan? Ideally I would max the fan out only while rendering.

And guys I did not opt to pay $40 bucks for a re-paste. If it comes to that I'll do it myself. Its funny to me that on a $1000+ laptop they would not opt for the best thermal compound by default. It hasn't been a problem for me before, but I would see that as a further selling point: Just always use the best thermal compound on Clevo/Sager. It's a marginal cost at most if the compound is bought in bulk. I know there is a labor cost for a re-paste, but if was done like that to begin with that wouldn't be a problem.

But I digress... I'm going to try my fan solution, let you folks know how it goes.

 

Your heat problem will be instantly solved by a repaste.. Just do that.. Don['t bother with fan idea.. You can set max fans when doing this but if the paste is itself bad, temps will not drop.. Let me give you an example.. When I used MX-4 with my 3940XM @ 3.8GHz, it pumped out within a day and my temps were 90-95C.. With IC Diamond, my 3940XM holds 4.0GHz in BF4 and temps are 85C ish...

 

I can't state how well the diamond IC has been for keeping my system cool. 8258-S with the 880M GPU and 4810 CPU.

The 880M has run me in the mid 80's playing games like Dead Island all maxed out, but the only time I hit 91c was when I was at someone's house, without any type of laptop pad, without elevatong the back, and the room's temperature was a hot and muggy 28c with about 90% humidity (he had the windows open). I also never turned fans on max during this time.

For the CPU, after 2 hours of burning my CPU hovers between 82-87c. Within limits, but a bit high. So going forward, I've been turning fans on max (FN-1) whenever I expect to max CPU for extended periods and now the CPU temps don't even get above 73, even maxed out 100% for over 2 hours converting video.

I think max fans is your ticket, but if you do repaste with Diamond IC or similar, I think it will scrape 5-10c off your averages.

 

Ashen post isn't 100% clear, the function key, Fn + 1 will toggle max fans. Thanks for that would have spent an hour looking that up

Ok here are my results:

Cores are maxing out at 83 C after the same amount of time. The actual delta is more like 6 C because my ambient temp is lower due to the weather. This will do for now. I think its obvious that over 80 C is still not ideal. I'm not going to re-paste anytime soon. For now while my stuff is rendering I'll just force the fans to max.