How do i cool from 86C ?

whatCaniPut · Aug 19, 2014

I just built a new pc, day 2 it got very hot (i touched the case & had to remove my hand) while playing battlefield 4.
Bios said temps were 46C & dropping.
Tried various software & read a few reviews of software HWiNFO was the best that i found.
So i had to see how hot it was getting, played a game or 2 then checked the software; you can see the results above & thats after i turned it off & temps started dropping.

While idle it sits around 13 to 23C
General stuff like browsing & online videos another 10 to 15C
But when gaming... yh

Room temp can be from 15 to 25C.

Here is the hardware

Motherboard - ASUS M5A97 R2.0
CPU - AMD FX8350 Black Edition
GPU - Radeon R9 270x
Case - BitFenix Neos
Heatsink - Lucifer

The heatsink came with a fan so did the case. (2x Fan)
Currently the case fan is (1 fan) pulling air in from the back of the case (near the top).
The fan on the heatsink is next to the case fan pulling air into the heatsink.

The heatsink fan hits 1400 rpm
The case fan around 1000rpm.
(both at maximum load)

Im going to get some Coollaboratory thermal paste as im not sure i set the paste correctly.
I'll also get 2 more case fans.

At most i can fit in 3 more 120mm fans
2 on the front another on the heatsink but i would also need a fan controller.
mobo - 1 x CPU Fan connector(s) (4 -pin) 3 x Chassis Fan connector(s) (4 -pin)

I want to get 2 more:
i will move the less powerful 1 from the back to the front.
i will get another fan for the front & a new 1 for the back.
The 2 at the front will extract air.
Also maybe change the cpu fan to pull air threw the heatsink.

Im not sure which fans to get, i need power but i dont want it too loud so that i cant concentrate.
Noctua NF-F12 2000 rpm seem fairly powerful but near on 30db
& 2 of them, would that be overkill? my temps are high tho.

The voltages displayed are they off?
Im not sure about bios power settings at all :S

Finally is there software to control the fans (or is a fan controller needed)?
In the bios the only option for fan speed is a minimum & that is (at most) 700rpm :/

whatCaniPut · Aug 20, 2014

Thanks for the reply, i have 2 2000rpm fans due to be delivered tomorrow.
With 2 intakes & 1 exhaust wouldn't that create positive pressure?
I read that negative pressure keeps the system cooler (but i guess with my case that would be hard to achieve).

Also as my GPU is hitting 86C would it be worth replacing its thermal paste?

hopefully i will be able to play bf4 without worrying about heat

hunter315 · Aug 20, 2014

You are running hot on the CPU, the GPU is at a perfectly acceptable temperature. GPUs can do 90C without risk, some go all the way up to ~105C so 86 isn't something to be concerned about.

Also your physical definition of hot "(i touched the case & had to remove my hand)" doesn't mean a thing. You can burn yourself on a 40C surface, but 40C is cool for pretty much every component in a computer.

I'd leave your GPU alone and investigate how to drop your CPU temps. Rigging up your CPU cooler with a push-pull configuration should help, but getting better airflow through the case should help drop temps across the board, and with your motherboard reporting 56C it seems that you just need more case fans.

The difference between positive and negative pressure is pretty minimal in terms of cooling, your main goal is to simply have air leaving the case fast enough to keep the case at room temperature. Positive vs negative is much more of a personal preference. I'd go with dirtyferret's fan layout suggestion, it should help quite a bit.

Edit - also be careful with that coolaboratory paste, its gallium based and will destroy anything aluminum it comes in contact with like your heatsink fins.

whatCaniPut · Aug 20, 2014

cheers
at current one fan (top rear) is pulling air in, then my heatsink fan is pulling air from that straight into the heatsink; so i will also need to rotate the heatsink otherwise its fan will be pulling against the exhaust.
As for another fan on the heatsink i will wait and see how it goes with the 2 new ones first (anymore will also require a fan controller).
When i originally put the (stock) thermal paste on i used a full 3g & just slapped it all on then pressed the heatsink down firmly to try & spread it (from what ive read since that was total n00b).

Im thinking the less powerful fan & a 2000rpm at the front, then the other 2000rpm as exhaust.
Finally they were all out of the coolaboratory paste so instead i got some Prolimatech PK-3 Nano Aluminium (it also had good reviews)
Thank you both

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