I have the following setup and everything's at stock settings:
AMD Athlon 64X2 5000+
(2x1GB) Patriot DDR2 800MHZ
Triplex HD 3850 512mb PCI-E
Gigabyte GA-M56S-S3
SeaSonic S12II 500W PSU
Nothing groundbreaking, a fairly middle of the road, older system.
It's all in a large ATX case with a couple of grills on the side and a 80mm exhaust fan on the back.
Now here's my problem, my graphics card temps were in the 90Cs without the exhaust fan on the back. After installing the exhaust fan my GPU temps have dropped down to about 80C max but my CPU cores have gone from about 80C max to 110C which is insanity.
CPU-ID Screengrab up the spoiler
The above max temps were recorded while playing Borderlands for about an hour and a half.
Here's my current case layout courtesy of MSPaint
The bottom of the case is always cool to the touch, the top gets fairly warm under load. I know hot air rises but should there be a fairly extreme difference in temp?
Is there much I can do?
I'm wondering if the exhaust being so close to the CPU is causing the issues. There's a grill for a fan on the side panel which sits right on top of the CPU, would the exhaust fan be better there?
Am I doomed?
EDIT - My BIOS has an AMD Cool n' Quiet option which is currently on, would turning it off mean the CPU fan would run at 100% all the time...could that help?
Posts
Do you have a stock heatsink on there? At the very least it needs to be reseated, something is definitely not getting appropriate contact. I would probably invest in a more powerful aftermarket heatsink if you don't already have one. Also you need better airflow in your case or else you're just blowing the same hot air around in there.
If I get a 120mm fan and use that in place of the 80mm one, then use the 80mm as an intake would that help?
I've left the computer idling all afternoon and temps are in the 25-35C range which seems normal, it's under extended load the temps seem to soar all round.
I'd rather not get an aftermarket CPU cooler. I can try and reseat the stock one and get some Arctic Silver but I'm hoping to fix this as cheaply as possible.
I went into the BIOS and turned off 'system CPU fan control' which makes the CPU fan 100% constantly rather than ramp it up/down depending on temps. I've just been playing Borderlands for over an hour and Core #0 maxed at 61C Core #1 at 55C.
That is MUCH better.
Could the automated fan control be messed up?
Will I kill my fan by having it 100% all the time?
no
Origin ID: Discgolfer27
Untappd ID: Discgolfer1981
My new min temp is 18C, breezy.
The PC was shutting down due to my CPU core temps, after I blasted the heatsink with air I got 80C with CPU fan control on. Then they started to get into the 100s again after I installed the exhaust fan.
Now with CPU fan control off I'm getting 60C. The noise of the CPU fan doesn't bother me.
I'll change the thread title to solved.
Thanks everyone.
I'm getting terribad temps...again..
I've now got a 120mm fan at the bottom of my case blowing air in, a 90mm exhaust (my case seem to be too narrow for a 120mm at the back :S) and a 120mm fan on the side panel blowing air onto the CPU.
I've bought a Thermaltake HS&F applied Arctic Alumina, reseated it a few times and made sure I've applied a nice, thin layer across the whole CPU.
This has got to be a bad CPU...even the shittiest case should be giving half decent temps with the measures I've taken...right?
It seems to idle around 27-30, bump up to 40-50 under load but it's continuous load that's killing it. The temps just seem to ramp up and up the longer it stays under load.
I might try and take everything apart at the weekend, tidy the crap out of the PSU cables (I have a Seasonic S12II 500W and there are loads of cables and it's not modular is there anything I can do to tidy them? ) and yet again reseat the HSF.
The exhaust fan cannot keep up with that much intake so hot air just recirculates inside the case getting warmer and warmer. If you cannot fit a 120mm in the back, you might experiment with disconnecting one of the intakes and see if temps improve. Or you could try flipping the side panel fan around so it exhausts the air around the CPU.
I'm tempted to have a go at drilling a blowhole on the top of the case and putting the sidepanel 120mm fan there as heat rises n'all. If I do this should I make the 90mm exhaust an intake on the sidepanel instead?
Does anyone have any experiences with blowholes? Do they work well?
edit - Right, I think I've solved it...I think...
I did some googling and apparently Gigabyte AM2 motherboards have a recurring problem. Heat. My CPU was getting around 1.35V which is supposed to be correct..although after lowering it to 1.25V in the BIOS and playing Bad Company 2 for the past two hours I'm getting 60C max. Still slightly warmer than I'd like but nowhere near the 100C mark I've been getting before.
It even seemed to improve my framerate in BC2 rather than hurt it, I assume because my CPU isn't melting.
Also, CPUID says the min voltage was 1.25, the max 1.30 so maybe when it was set at 1.35 in the BIOS it was effectively overclocking my CPU under load as it would've probably gone to around 1.40?