CPU temp 30c at idle, 90c at full load. Wtf?!

Gents, I have to admit to being a bit of an idiot.

I took the cooler off to give it a clean and re-sit it and found that I'd trapped the power cable between the CPU and the cooler plate! :o

Once I installed it again (PROPERLY) it's running smooth smooth smooth. 30c when idle and hitting max. 55c when running something intense like Crysis 3. Turns out a 1500rpm fan is ok for my setup. Thank goodness.

Apologies for being a numpty, and thank you all for such wonderful advice. It wasn't a waste as I now know way more about cooling than I did before. I'll be sure to pass on this new found knowledge.
 
There is a bit of modding you could do on that case with the side venting. I would look at a double 120 fan shroud (or radiator fan shroud) which could be pop rivetted or bolted to the outside of the case giving decent exhaust or inlet directly over the CPU / GPU / VRM area with two 120mm fans installed. Being on the outside of the case it will not impede your CPU heatsink.

You could also fit a better fan to your heatsink Akasa venom or similar or have a push pull fan setup.

Look for second hand bits and with a bit of ingenuity you could improve your existing setup no end.
 
Good plan on modding the case.

It can't support 120mm unfortunately, but it can fit two 92mm fans - one exhaust and one intake. Unless I'm missing a trick here, but looking at this pic makes me think that without cutting the case up I'm stuck with the vent sizes provided.

71nE0RMXxGL._SL1500_.jpg


Thinking of getting two Noctua NF-B9 then slowing down the intake fan to create the negative pressure. Am I on the right track?
 
I was thinking something like below with 2 x 120 fans, attached to the door. But yes, 2 x 92mm fans would be an improvement.

shr-0820_p1-700x700.jpg
 
Doyll, your guide is actually what got me started on this fan mission :) Really great advice.

nkata, I thought venting from the side (as well as the front and back) was a no no. Doesn't it disrupt that airflow?
 
I think front and 2x side intakes to PSU and rear exhaust with PCI slot covers removes will give a balanced airflow. If CPU cooler fan is PWM all intake could be PWM controlled..as explained in link below.
http://forums.overclockers.co.uk/showpost.php?p=26079729&postcount=5

Arctic F9 fans are pretty good.. especially for £3.49-3.98.. and come in 3 flavors; standard, PWM, or with smart temperature speed control. I don't like the Pro model as it can only be used for exhaust.
 
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Keep in mind your CPU cooler is using a 110mm fan and you have only 1x 92mm intake and 1x 92mm exhaust fan plus PSU fan exhausting air from case. That is barely enough intake airflow for just the CPU cooler.

So what supplies the airflow for your GPU? :D

Move your rear exhaust to side intake and remove PCI slot covers. ;)
 
So, don't have any rear exhaust at all?

Have one for intake and the other on the side? I still have a left over stock 80mm that could remain where it's currently sitting in the rear.
 
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Ah, I see what you're saying - the PSU already has an exhaust. So leave that + the crappy stock 80mm to exhaust air, then add a 92mm intake to the side and another 92mm intake on the front.

Have I got that right?

*Edit: Given my case config the GPU is sitting about 1 inch from the bottom of the case (fans facing down). Not sure if that changes things.
 
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The side and front fans will be primary supply for both CPU and GPU.

Can you move your GPU up? That way lower side and front fans can flow air to the fans intaking air into GPU.

If intake fans are doing their job supplying cool air, exhaust fans are often not necessary.. because the intake fans pushing cool air in which than pushes hot air out rear vent, through PSU when idling, and out PCI slot openings. ;)


Only way to find out is try it.
 
SlapDashAsh said:
Hi,

I've recently built a new gaming PC using a Gigabyte GA-78LMT-USB3 motherboard, AMD FX-8320 cpu and Zalman CNPS8900 Quiet cooler.

I've been using Speedfan and HWmonitor to check CPU temps and something odd is happening. At idle it sits at a comfortable 30-35 degrees C, which I thought was a decent temp. But when I play a game it jumps to 90c.

I thought increasing the fan speed would help when it gets hot but the cooler only goes to 1500rpm max, which it's already hitting. And it's definitely throttling the speed as the temp rises, I opened the case and made sure of it.

Please help!
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Maybe its just the games you play? I assume you are playing modern fps's. Try playing the game in a window, and see if that helps. For me I've tried it and it knock 20c off my temps.
 
Maybe its just the games you play? I assume you are playing modern fps's. Try playing the game in a window, and see if that helps. For me I've tried it and it knock 20c off my temps.
 
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