The fan is pointing more towards the back of the PC, so I think it should somewhat get the hot air out. If no, please tell me I can cool it down some different way (if there is a cheap way tho)
In between builds I had to use a small office mobo with only a single fan connector and a bigger case so I had a fan blowing directly in the side and it worked.
Platonist_Astronaut
Yeah, probably. To see how much you’d need to run some stress tests.
DominionSeraph
Yes, that will work just fine.
Putting it up against the case and running it on its lowest setting should be all you need. Most PCs don’t put out that much wattage, they just tend to heat up because the heat gets trapped and builds up. With just the side open things are usually nearly as cool as they’re going to get.
But… is your PSU mounted with the fan down with the case sitting flush against that riser? Your PSU needs to get some air too. You should flip it around, or at least put something under the back of the case to lift it up for now.
Lithandrill
Sure, I used to put one of those upright box fans pointed at my PC. Bit loud but obviously it works. Moves a lot more air than the smaller fans.
Quad__X
I’ve done this before, when pushing overclocked DDR5 RAM to the limit in the summertime. I later added heatsinks and now the RAM stays nice and cool, also using case’s internal fans instead of an external fan.
SlowRatchet
You tell us! Do some measurements!
Xeadriel
yes. my 3090 occasionally does some thermal throttling (I think i need to look at fan curves again) so I have been doing this as well for now.
download OpenHardwareMonitor to check the temps. youll see it helps
Awkward-Shoulder-624
Should. I had a similar case in the past and I solved the problem by removing the dust filter on the front. Mine was very thick and not very porous similar to vacuum cleaners, so it was basically a wall.
Legal-Ad2359
Some time ago, many years ago, I had a PC that in the summer, if it was hot in the room, without such a “system” with a fan, turned off from overheating
Kosmos-World
Use to have a box fan stuffed up against my PC. Worked just fine lol.
shamonemon
Yeah it does
WrongSubFools
Given that it’s your setup, you’re better equipped to answer that question than anyone. We should be asking *you* how much that cools off the PC, and you can answer by checking the temps.
Look at your temps my dude??
But yes, this 100% reduces temps. On my old PC, my temps went from 75-85 to 60-70 doing this
Brorim
i have done this 😂👍
JACKjcs
That’s how I burned a pc, the force of the air thrown by the fan was forcing the gpu fan and it ended up burning.
It was a pretty old pc and so was the gpu but I guess that tells you something.
I would say move the fan away from the pc or set the speed to minimum and at a safe distance.
SwiftyLaw
You have this because it’s an older case with tons of hdd slots that block the air entry. Just unmount that rack and add some front fans. In the meantime you’re ‘hack’ also works but will suck in all the surrounding dust
Abyss_Sovereign
Yes most likely.
SeaworthinessTight83
certainly better than nothing, it blows the heat out
Ratiofarming
This is a proven method invented by the ancient greeks. Millions of gamers have used this to get their PCs through hot summer days and countless LAN parties.
hachi_roku_
Should, but don’t expect miracles
That’s a lot of drive bays btw.
TheMatt561
I used to do this, I would even put a bowl of ice in front of the fan.
A decade or so ago I would game in a room with no ac in the summer. My PC would get hot AF – i did the same thing you are, but with a box fan. Got me through the summer that year.
Ok_Worth4113
yes with dust as free
FLBoustead
yes. any amount of cooling helps. unless the air you’re blowing in is hotter(electrical cabinets where I work get the blowjob setup for when we have ongoing operations. EVERYTHING gets just a tad warm 😅
grimylizard
Don’t ask reddit. Use some critical thinking and find out yourself. You can find the programs you need to measure the temperature and stress test the system in a couple seconds on google.
RPgenio
Tried and true.
Chickie69
Isn’t doing this can push more dust into the pc?
_Uther
If the air flow in the case is poor, yeah it can help
FuerDieHorde
To wow Classic my pc always got hot in the summer and nothing worked anymore, I did it EXACTLY THAT way, it worked wonderfully and those were the best summer holidays I had as a child 😅
36 Comments
In between builds I had to use a small office mobo with only a single fan connector and a bigger case so I had a fan blowing directly in the side and it worked.
Yeah, probably. To see how much you’d need to run some stress tests.
Yes, that will work just fine.
Putting it up against the case and running it on its lowest setting should be all you need. Most PCs don’t put out that much wattage, they just tend to heat up because the heat gets trapped and builds up. With just the side open things are usually nearly as cool as they’re going to get.
But… is your PSU mounted with the fan down with the case sitting flush against that riser? Your PSU needs to get some air too. You should flip it around, or at least put something under the back of the case to lift it up for now.
Sure, I used to put one of those upright box fans pointed at my PC. Bit loud but obviously it works. Moves a lot more air than the smaller fans.
I’ve done this before, when pushing overclocked DDR5 RAM to the limit in the summertime. I later added heatsinks and now the RAM stays nice and cool, also using case’s internal fans instead of an external fan.
You tell us! Do some measurements!
yes. my 3090 occasionally does some thermal throttling (I think i need to look at fan curves again) so I have been doing this as well for now.
download OpenHardwareMonitor to check the temps. youll see it helps
Should. I had a similar case in the past and I solved the problem by removing the dust filter on the front. Mine was very thick and not very porous similar to vacuum cleaners, so it was basically a wall.
Some time ago, many years ago, I had a PC that in the summer, if it was hot in the room, without such a “system” with a fan, turned off from overheating
Use to have a box fan stuffed up against my PC. Worked just fine lol.
Yeah it does
Given that it’s your setup, you’re better equipped to answer that question than anyone. We should be asking *you* how much that cools off the PC, and you can answer by checking the temps.

Check this video by Rozor
https://youtu.be/lVMCqR_zbKU?feature=shared
Look at your temps my dude??
But yes, this 100% reduces temps. On my old PC, my temps went from 75-85 to 60-70 doing this
i have done this 😂👍
That’s how I burned a pc, the force of the air thrown by the fan was forcing the gpu fan and it ended up burning.
It was a pretty old pc and so was the gpu but I guess that tells you something.
I would say move the fan away from the pc or set the speed to minimum and at a safe distance.
You have this because it’s an older case with tons of hdd slots that block the air entry. Just unmount that rack and add some front fans. In the meantime you’re ‘hack’ also works but will suck in all the surrounding dust
Yes most likely.
certainly better than nothing, it blows the heat out
This is a proven method invented by the ancient greeks. Millions of gamers have used this to get their PCs through hot summer days and countless LAN parties.
Should, but don’t expect miracles
That’s a lot of drive bays btw.
I used to do this, I would even put a bowl of ice in front of the fan.
https://preview.redd.it/aaci499i9v6f1.jpeg?width=3024&format=pjpg&auto=webp&s=991b9d0995dbe2ecc51e93dd32a79e65fac3dc73
Reminds me of when i tried to cool my old laptop with a desk fan…suffice to say it worked! Your configuration should also help
Yes it will. This fan will move more air than all the fans in your system. I have done that before and it cools quickly.
Before all the fancy coolers we have now we used to put a box fan next to the pc with the case side off to cool it
https://youtu.be/lVMCqR_zbKU
😆
Yes it does.
A decade or so ago I would game in a room with no ac in the summer. My PC would get hot AF – i did the same thing you are, but with a box fan. Got me through the summer that year.
yes with dust as free
yes. any amount of cooling helps. unless the air you’re blowing in is hotter(electrical cabinets where I work get the blowjob setup for when we have ongoing operations. EVERYTHING gets just a tad warm 😅
Don’t ask reddit. Use some critical thinking and find out yourself. You can find the programs you need to measure the temperature and stress test the system in a couple seconds on google.
Tried and true.
Isn’t doing this can push more dust into the pc?
If the air flow in the case is poor, yeah it can help
To wow Classic my pc always got hot in the summer and nothing worked anymore, I did it EXACTLY THAT way, it worked wonderfully and those were the best summer holidays I had as a child 😅
Using absolute logic, yes.