Cooling problems after upgrade

Toggle sidebar Toggle sidebar
B

Bruhmis

Distinguished
Nov 21, 2013
43
0
18,530
yesterday I replaced my motherboard/cpu. I have an i7 4771 and an ASUS H81M-E LGA 1150 motherboard.

none of the coolers seemed to work any harder than default no matter what, even with really taxing processes running. when I measured my temps they were normal-ish with nothing running, so I opened prime95 and within less than 10 seconds of starting a stress test my cpu temp was at the maximum safe temperature.

I've tried changing BIOS settings, and I've set it so that whenever the cpu goes above 45 degrees all fans perform at maximum capacity. after doing this there was a very slight increase in noise from the fans and even smaller decrease in the speed at which the cpu temps reach unsafe levels. so when all my fans are supposedly at 100% speed my entire computer is still as quiet as a laptop and I still have heating issues.

it may be important to note that on the motherboard I bought, there's only 1 connector for case fans so I had to buy a cable to split it between 3 fans. it's also a 4 pin connector and I'm using 3 pin fans. still, the cpu fan uses it's own designated connector and still has the same problem.

does anyone know why this would be happening?
 
Sort by date Sort by votes
Ubrales

Ubrales

Polypheme
Dec 3, 2009
13,234
8
61,465
Start with the CPU/heatsink installation. All traces of old thermal compound must be cleaned using 70% (or better) Isopropyl alcohol and a thin and even layer of new thermal compound needs to be applied in accordance to industry standards. Arctic Silver 5 will work.
 
Upvote 0 Downvote
B

Bruhmis

Distinguished
Nov 21, 2013
43
0
18,530


I didn't mean to choose this as the solution...

I don't have any spare parts of any kind and being that I had to buy an SSD yesterday I can't buy any either. I had a similar theory to yours, though I don't think it's anything to do with insufficient power from the psu. the reason being that before I replaced my motherboard the same psu had no problem cranking up all the fans to the point where I couldn't even hear the sound from a game. I think more likely is that the motherboard isn't distributing sufficient power
 
Upvote 0 Downvote
B

Bruhmis

Distinguished
Nov 21, 2013
43
0
18,530


the cpu and motherboard are brand new out of the package yesterday, and the thermal paste is intel stock.
 
Upvote 0 Downvote
Ubrales

Ubrales

Polypheme
Dec 3, 2009
13,234
8
61,465
.[/quotemsg]the cpu and motherboard are brand new out of the package yesterday, and the thermal paste is intel stock.[/quotemsg]

The Intel compound will work even though there are better compounds.

Regarding the fans, connect them directly to the PSU using Molex connectors and adapters. Let them run at full rated RPMs instead of being speed controlled by the motherboard fans headers and BIOS (EUFI) settings.

Initially, I started out with a speed control for my fans, but ended up connecting them directly to the PSU. Now they run full speed.
 
Upvote 0 Downvote
C

CRooKeDCoP

Honorable
Feb 3, 2014
90
0
10,660
Yah I wasn't actually stating that it would be broken. But a good place to look is how the fans are getting power and if they are really running at max capacity or not. I think Ubrales has it right there. Connect them directly if you can. See if that makes a difference.
 
Upvote 0 Downvote
B

Bruhmis

Distinguished
Nov 21, 2013
43
0
18,530
I'd rather avoid that if I can. it would use a lot of unnecessary power and I'd have to spend even more money. I know my current fan speed isn't what it's supposed to be, I just don't know what's causing it.

also, since I replaced my parts/reinstalled windows, this pops up every time windows starts:

tqul7hU.png


no idea why or if it's at all related.

 
Upvote 0 Downvote
Ubrales

Ubrales

Polypheme
Dec 3, 2009
13,234
8
61,465

That can be fixed by going to the Asus website and downloading and installing the appropriate chipset driver for your motherboard. (Even if you have already done this during the motherboard install).
 
Upvote 0 Downvote
FloppyNacho

FloppyNacho

Honorable
Feb 14, 2013
218
0
10,760
It sounds like your temperature sensor is wonky. I haven't experienced this myself but have experienced it with machines at school. It will be hard for you to be confident in your system like this. I think the best solution will be to RMA the chip if no input you get here helps.

With that said, I'll give some options as to what could be wrong.

1) Too much thermal paste.
2) Damaged motherboard.
3) Damaged CPU.
4) Backwards CPUFAN connector.

The point of thermal paste is not to create a barrier between the Heatsink and CPU. It is to bond them. This is transferring the most heat when you have an extremely thin, well spread coat of paste. Be sure you didn't use the paste that came with the fans unless it was made by a reputable company (arctic silver) There are bad samples in the bunch they tube up and ship out.

If the motherboard were damage in any way keeping the cpu from being aware of its temperature that would obviously be a bad thing.

If you put the CPUFAN connector on backwards, its possible that the fan isn't getting the correct instruction to move a certain speed. Be sure it is on correctly. (although I think its very hard to get on backwards)

Oh yeah, and... There are points that chips stick at before they move to a new temperature. For instance, I know that the GPU for the 6850 ran at around 61 Celsius even if it's load increased a fair deal from what originally caused it to reach 61 degrees. It's resting temperature also had that same behavior to the degree that it would lay at around 35 Celsius idle and playing a very light game.

This last bit leads me to believe your chip has a range it "likes" to rest in that is just not suitable for prolonged use. :(

---

Best of luck :)
 
Upvote 0 Downvote
B

Bruhmis

Distinguished
Nov 21, 2013
43
0
18,530


do you think it could have somthing to do with the board not using the fans properly though?
 
Upvote 0 Downvote
B

Bruhmis

Distinguished
Nov 21, 2013
43
0
18,530


I think I've ruled out incorrect temperature detection though, because I tried to force the fans to operate at 100% at all times which only yielded a bare minimal, almost indistinguishable difference in noise/temperature.
 
Upvote 0 Downvote
Ubrales

Ubrales

Polypheme
Dec 3, 2009
13,234
8
61,465
[/quotemsg]
do you think it could have somthing to do with the board not using the fans properly though?[/quotemsg]

It's possible. And if the fans are directly plugged into the PSU using Molex adapters then we know for sure that they are running at full rated speed!
 
Upvote 0 Downvote
B

Bruhmis

Distinguished
Nov 21, 2013
43
0
18,530
well I just flashed my BIOS and installed some other various chipset updates and they didn't improve or change the problem at all so that's ruled out. I don't have any molex connectors, I wouldn't know how to use them if I did, and I don't have the money to pay someone to do it for me. so troubleshooting this is my only option right now.
 
Upvote 0 Downvote
Ubrales

Ubrales

Polypheme
Dec 3, 2009
13,234
8
61,465


We are back to my first suggestion to re-do the CPU/heatsink installation.
 
Upvote 0 Downvote
B

Bruhmis

Distinguished
Nov 21, 2013
43
0
18,530


I can't do this, and I'm fairly certain I've ruled this out as a solution since every fan in the case operates at the lowest speeds even when manually set to run at full capacity. if I could just quickly do try it just to be 100% positive it wouldn't help I would, but I can't.
 
Upvote 0 Downvote
C

CRooKeDCoP

Honorable
Feb 3, 2014
90
0
10,660
Only way to know for sure that it's not the fans is to re-seat the CPU and heatsink. You don't have more thermal paste ? Even cheap stuff will do which only costs dollars. Perhaps a local computer store will grant mercy on you and give you some if you ask nicely. Otherwise connecting the fans directly to the PSU to get them to run at max speed is your only other option. Not much we can do for you if you can't help yourself out a little bit more. Computers can be harsh ladies.
 
Upvote 0 Downvote
B

Bruhmis

Distinguished
Nov 21, 2013
43
0
18,530


I have no experience with handling computer hardware and it costs $40 for me to have someone else do it for me. I'm not going to fiddle around in my case because I'm almost guaranteed to break something and accomplish nothing in the process. I know the fans themselves aren't at fault for sure because there was nothing wrong with them 3 days ago before I put new hardware in.
 
Upvote 0 Downvote
FloppyNacho

FloppyNacho

Honorable
Feb 14, 2013
218
0
10,760
What kind of power supply do you have? The reason I ask is not because I think you have a bad power supply or it isn't giving enough wattage.

I want to bring up a lesser known fact that the 12V rails plugged into your motherboard have an amperage that is divided amongst everything plugged into the motherboard. This means that the extra fans you have placed on one header are using 3 times the amperage intended. It could be that your 12V rail does not give enough amps to run a high-performance CPUFAN and 3 SYSFANs all at once.

Try switching to just an intake fan on the SYSFAN header and CPUFAN on it's respective plug.

This is a safe tweak, I believe this will give you some meaningful data and am willing to standby here on the forums until you've posted :)

Let's fix this
 
Upvote 0 Downvote
B

Bruhmis

Distinguished
Nov 21, 2013
43
0
18,530


I have a corsair CX500. the only way it could be the PSU's fault is if the professional I brought it in to (who also built the rig originally and has made upgrades to it since) somehow damaged the PSU in the process of replacing the CPU/MOBO. I'll try what you suggested now.
 
Upvote 0 Downvote
You must log in or register to reply here.

TRENDING THREADS

Latest posts

Moderators online

Share this page

COMPANY
RESOURCES
FOLLOW
Top Bottom