For the last "n" years, where n is unsure but perhaps 10, both my main machines under my desk have operated without the sidewalls mounted. I had figured more air available to circulate, etc. Others have agreed, others have said cooling is better with the walls in place. Opinions.
Most computers are designed for air to flow in the front, and out the back. removing the side panels alters this airflow, and can have an effect on cooling. In most computers, it doesn't really matter very much. If you're generating a lot of heat, as you would in a gaming computer, or one used for scientific research, it may be more of a factor.
The best advice, just like with programming, is to test, and observe the results. If the computer has a temperature monitor (most do, nowadays), observe it with the panels off, and again with the panels on, while the computer is performing its typical tasks. Whichever way gives you the lowest CPU/GPU/Memory temperatures should be the permanent configuration of the machine.
What can this strange device be?
When I touch it, it gives forth a sound
It's got wires that vibrate and give music
What can this thing be that I found?
Here in this tropical climate I have learned to be appreciative of the power of exhaust fans. I think these are the true coolers. They really make a difference. However this requires a closed cabinet. My home cabinet is a NOX with a front intake and a side exhaust. That wasn't nearly enough to sustain a good temperature range during the very hot and damp dry season (that can run for as long as 6 or 7 months) and so one day I took it to this kid that works metal and asked him to cut a square section off the top where I put a second exhaust fan. It's marvelous! Even when I switch the intake off. But no so much when I take the side panel out.
But as Elkvis advises, best bet is to see it for yourself. Aggregate temp data over a decent period of time and compare.
Originally Posted by brewbuck:
Reimplementing a large system in another language to get a 25% performance boost is nonsense. It would be cheaper to just get a computer which is 25% faster.
I second Elkvis' notion – you really need to test it if you care. For many users, dust accumulation and loudness are additional concerns informing their choices, so keep that in mind when comparing your setup to others. I have intake filters and overpressure in my case and no top-mounted fans. Unlike my prior case, this one is very clean inside even after months; I care about that.
