Do you really need to put a fan in the back of your computer cases?

[hippity_hoppity]

So, I got a new case that includes 3 fans (since I can't buy more because I'm a little out of my budget) Here I'm really confused about which fan and where to put each of them. So I'm here again to ask you guys some unintelligent question. Do I really need to put another fan in the back? In case if I do, the only option there is to put the 2 infront and 1 in back, simple. But do I have to?? 

 

Any answer will be tolerated and appreciated

 

*P.S. That picture of my case is actually from the retailer's site. You can also check it out here: Beli CUBE GAMING VARDE & 3 PCS RAINBOW BOREALIS FAN 
https://tokopedia.link/SOiVVrBxTX di toko distributorkomputer Rp449.000 di Tokopedia Sekarang! 

 

 

*P.S.S. Just so you know, I live in Indonesia right now.

 

[Fasauceome]

Oftentimes, it helps significantly. However, you can simply test it yourself and see what gives you the best result, both thermally and aesthetically

[YedZed]

This might be a trash response but technically anything will work, in the sense that as long as fresh air is somehow getting in and some warm air is somehow getting out your PC will work fine. Now, you can be worried about throttling and stuff like whether you are eventually getting less performance, but don't be afraid to actually try it out in your particular use case. It's not gonna break anything. 

What I'm saying is, try it. Experiment a little. See if it gets really hot in one area or another, and try to solve it.

[Votivee]

Kinda off topic but that case looks like it has absolutely zero airflow for those front fans.

[SenKa]

It is a... case by case basis.

 

Pardon the pun, but it is quite literally dependent on the case you use. A more closed off aesthetics or noise focused case will benefit from any more airflow you can throw at it. Though, if you were to use a very open air case like the Antec Lanboy Air, you will not notice any difference.

 

I use this one very niche and old case as an example as I used it up until quite recently. It is nearly a vertical test bench, and you could get away with no extra case fans and simply use the properties of convection plus the fans on your PSU, CPU cooler, and GPU.

[SenKa]

1 minute ago, Votivee said:

Kinda off topic but that case looks like it has absolutely zero airflow for those front fans.

It draws air from the bottom. That is an incredibly old and inefficient design. 

[Turtle Rig]

You need the warm air to exit a exhaust fan is a must!  Without it your playing with fire and sh*T is gonna heat up!

[aisle9]

If your CPU cooler is a tower and your CPU isn't a forest fire, pointing it to blow out the rear usually does a perfectly serviceable job of exhausting hot air.

[WoodenMarker]

What are your specs?

[hippity_hoppity]

13 hours ago, WoodenMarker said:

What are your specs?

Well, here are my specs 

GPU: PowerColor RX 570 Red Dragon 4GB DDR5

CPU: Ryzen 3 2200g

Motherboard: X370M-Pro4

Power Supply: be quiet! System Power 9 400w 80+ 

Storage: WDC Blue 1TB 

Ram: Klevv DDR4 BOLT X Series 3200mhz 

Case: I would suggest you to scroll up

 

Extras: 

CPU Cooler: Deepcool Gammaxx 300 

 

Pretty much, my build is just a simple low-budget PC, not too good but at least I can run most 1080p titles. 

 

This is my first build though

[WoodenMarker]

Adding a rear exhaust could mainly help graphics card cooling by removing the heat near it. You could achieve a similar effect by moving the uppermost fan from the front to the rear. It may mean a bit less cool air for the cpu cooler but I think it would provide more benefit by helping the exhaust. 

[hippity_hoppity]

54 minutes ago, WoodenMarker said:

Adding a rear exhaust could mainly help graphics card cooling by removing the heat near it. You could achieve a similar effect by moving the uppermost fan from the front to the rear. It may mean a bit less cool air for the cpu cooler but I think it would provide more benefit by helping the exhaust. 

What if I remove the one in the bottom, and place it in the rear? Would that make any major difference? Y'know, instead of the one in the top?

[hippity_hoppity]

15 hours ago, aisle9 said:

If your CPU cooler is a tower and your CPU isn't a forest fire, pointing it to blow out the rear usually does a perfectly serviceable job of exhausting hot air.

Well... Unfortunately my CPU cooler isn't a tower. If you would like to know, my cooler is Deepcool Gammaxx 300. I mean if I run out of options I can buy the Deepcool Ice blade 200M instead. A tower-looking one that has similar performance as the Gammaxx 300

[WoodenMarker]

4 hours ago, hippity_hoppity said:

Well... Unfortunately my CPU cooler isn't a tower. If you would like to know, my cooler is Deepcool Gammaxx 300.

The Gammaxx 300 is a tower cooler. What makes you think otherwise? 

4 hours ago, hippity_hoppity said:

What if I remove the one in the bottom, and place it in the rear? Would that make any major difference? Y'know, instead of the one in the top?

That would mean less fresh air for the graphics card which is generally harder to cool and more sensitive to temps.