Help with cooling/airflow?

[Alowan]

Hi,

Long time follower of LTT but first time poster.

This channel and site made me return to pc builing and for the first time in 10 years build my own pc.

 

The build contains of:

Fractal Design Define Mini C case

ASUS Strix Z270G Gaming Motherboard

Intel i7 7700K

EVGA GeForce GTX 1080 Ti SC Black 

Kraken x52 cpu cooler

Samsung EVO 850 500gb

 

All assembled and XMP ram mode + preformance mode in bios. (I know I can OC better with custom settings)

 

So far I have mounted the x52 in the front with 2x 120 fans and custom fan profile.

And then 1x 120 exhaust fan in the back and 1x 120 exhaust fan in the top.

 

Needless to say this is for as high end gaming as it can give me and there is budget to change things out if needed..

 

 

My problem/question is: 

I am wondering if I should repositon the fans/AOI or even add more/better fans (the ones used are the stock for the case and the x52)

 

With the above setup I get the following:

In idle:

CPU temp: ca. 32 degrees C / 90 degree Farenheit 

GPU temp:  ca. 24 degrees C / 75 degrees Farenheit

 

temp with Furmark CPU burner after 1hour:

CPU: max temp 79 degrees C / 175 degrees Farenheit

 

temp with Furmark GPU stress 100% load test after 1 hour

GPU temp: 72 degrees C / 162 degrees Farenheit

 

 

When I run it for longer or if I run a game I feel the case getting hot and I have max temps on the GPU of around 80 and it downgrades the clockspeed of the GPU to around 1900 MHz (GPU fans run at 50-70% - and a bit more with custom fancurve if Precision XOC is open)

CPU-temp is <70 degrees max temp.

 

 

Hope someone can give me some pointers/link me in the right direction as google and these forums have left me more confused..

 

Best regards

Mads

 

 

(PS I posted this in new build as it is still in build phase - but if it is posted in wrong category please say so)

[thelordofwarr]

You could if it's possible mount the aio on the top as a exhaust, imsaldy I can't look up your case right now (on a train). Then you would pull in more cooler air from the front but you would sacrifice CPU temps. Maybe adjust the gpu fancurve a bit so it ramps up more if the noise doesn't bother you. Also you can adjust the aio fancurve (either through your bios or the software of your aio, depends where you plugged them in) to ramp up more at cooler temperatures, as the CPU doesn't get as hot as a gpu while gaming. I would stick to adjusting the gpu fancurve and undervolting, there's a Pascal undervolting guide/thread in the forum, just search it and you'll find it. Otherwise you could change the aio fans if you have the budged (I would recommend the el Vardar fans, they perform really well for me). 

[matus177]

Hey!

 

I think that the only thing that could help is change of the case. Define c is not the best airflow case and the "mini" is not helping either. If you could get meshify c (not mini) I think that you should be okay. Normal lines of define c and meshify c are quite small, so mini for this kind of high end (hot) hardware is not a good solution if you want the best performance. I am sure that temps would go lower in meshify c.

[Alowan]

43 minutes ago, matus177 said:

Hey!

 

I think that the only thing that could help is change of the case. Define c is not the best airflow case and the "mini" is not helping either. If you could get meshify c (not mini) I think that you should be okay. Normal lines of define c and meshify c are quite small, so mini for this kind of high end (hot) hardware is not a good solution if you want the best performance. I am sure that temps would go lower in meshify c.

Thanks for the reply to both of you.

This made me think.. How much headroom (space above computer) is needed.. atm there is about 10cm from pc to desk..? Can this have an effect?

[Alowan]

I tried taking of the front of the case to see if the airflow from the front is the problem/something that can be optimized but it dosen't seem to have much effect on GPU temp.. 

 

[Alowan]

After adjusting fan curves I now get a relativly quiet pc (there are fan noise but it is bearable without headphones) and a stable gpu temp og around 72 degrees at 2 hours of full load with around a clockspeed of 1920 MHz. CPU around 50 degrees average (got a bit cooler without being noisier due to curves)

 

Is that acceptable temps for the gpu for sustained load?

[WoodenMarker]

2 hours ago, Alowan said:

After adjusting fan curves I now get a relativly quiet pc (there are fan noise but it is bearable without headphones) and a stable gpu temp og around 72 degrees at 2 hours of full load with around a clockspeed of 1920 MHz. CPU around 50 degrees average (got a bit cooler without being noisier due to curves)

Is that acceptable temps for the gpu for sustained load?

Your current configuration is fine and those are good temps. 

[LogicalDrm]

Keep in mind that 7700K is known to be hot chip. If you want lower temps, use manual voltages.

[Alowan]

Note that the i7700K stays cool as a cucumber (maybe a cucumber on a sunny day - but a cucumber none the less)