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cabinet cooling

niel4249
By niel4249
in Cooling
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31 minutes ago, niel4249 said:

hi

 

i dont really know where to put this topic, but...

does anyone know how to really test a cabinets cooling. for an example if you have all the fans to just take the air out of the cabinet versus blowing "fresh" air in, or maybe 50/50 on blowing and sucking it out?

A nonstop burn test and then manually reconfigure and see what the difference in temperatures are between configurations.

 

In general, if the cabinet is quite small and has a decent amount of openings, having a negative pressure bias is best.

 

In most cases though, you want it neutral, so you're getting a steady stream of airflow through the cabinet.

Builder/Enthusiast/Overclocker since 2012 with a focus on SFF/ITX since 2014.

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Are you referring to a cabinet or a PC case? If the former, is it opened or closed? Where does the PC sit in it? Is airflow constricted on any side?

I've been using computers since around 1978, started learning programming in 1980 on Apple IIs, started learning about hardware in 1990, ran a BBS from 1990-95, built my first Windows PC around 2000, taught myself malware removal starting in 2005 (also learned on Bleeping Computer), learned web dev starting in 2017, and I think I can fill a thimble with all that knowledge. 😉 I'm not an expert, which is why I keep investigating the answers that others give to try and improve my knowledge, so feel free to double-check the advice I give.

My phone's auto-correct is named Otto Rong.🤪😂

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17 hours ago, Agall said:

A nonstop burn test and then manually reconfigure and see what the difference in temperatures are between configurations.

 

In general, if the cabinet is quite small and has a decent amount of openings, having a negative pressure bias is best.

 

In most cases though, you want it neutral, so you're getting a steady stream of airflow through the cabinet.

well they say it is a big pc case. i want a phanteks nv7 there are lots of openings and space for 12 fans so... i just think they sit a little akward, and i am not sure on how to mount them when they are up aganst each other in the corner

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1 hour ago, niel4249 said:

well they say it is a big pc case. i want a phanteks nv7 there are lots of openings and space for 12 fans so... i just think they sit a little akward, and i am not sure on how to mount them when they are up aganst each other in the corner

I barebones out cases that I know are just locked inside of a cabinet. Barebones being that you remove most of the unnecessary bits, including a lot of the frame.

 

The only thing to maintain is the grounding connections on the motherboard standoffs and into the PSU (the mobo screws and PSU screws ground those components to the case, generally not an issue if you don't but can be). 

Builder/Enthusiast/Overclocker since 2012 with a focus on SFF/ITX since 2014.

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On 9/24/2024 at 3:48 PM, niel4249 said:

hi

 

i dont really know where to put this topic, but...

does anyone know how to really test a cabinets cooling. for an example if you have all the fans to just take the air out of the cabinet versus blowing "fresh" air in, or maybe 50/50 on blowing and sucking it out?

Ok, now I can answer. 

 

All in or all out doesn't work well. You may not even get the best results with all fans unless you manage to find the best configuration. At minimum, you could, for example:

  1. fill up the side as intake,  and exhaust will be the rear and the back top position;
  2. Do the reverse of #1;
  3. Try a chimney style with intake on bottom and exhaust on top. 

In general, it is preferable to have more fans intaking than exhausting as long as intake has dust filters and exhaust doesn't. This is called positive pressure.  If you have negative pressure, air will come in through EVERY hole, requiring more frequent cleaning of dust. If your room is very dusty, and/or you have furry pets, and/or there is fungus, negative is going to be a problem. 

 

To see which can configuration gives the best results for your CPU and GPU, based on my testing experience with a variety of software, use 3DMark Time Spy to heat things up, and use HWiNFO64, GPU-Z or other to watch temperatures. Whichever config gives the lowest temperatures while running Time Spy is your solution. 

 

Sorry, there is not one best answer for everyone. 

I've been using computers since around 1978, started learning programming in 1980 on Apple IIs, started learning about hardware in 1990, ran a BBS from 1990-95, built my first Windows PC around 2000, taught myself malware removal starting in 2005 (also learned on Bleeping Computer), learned web dev starting in 2017, and I think I can fill a thimble with all that knowledge. 😉 I'm not an expert, which is why I keep investigating the answers that others give to try and improve my knowledge, so feel free to double-check the advice I give.

My phone's auto-correct is named Otto Rong.🤪😂

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