Where to put extra fan in this case for...........

Daytrader · 18 Aug 2015 at 10:02

cheers

mushtafa · 18 Aug 2015 at 10:53

Daytrader said:
As you can see in photo, i have 1 front intake, 1 rear exhaust at the moment, so you reckon just 1 more bottom intake fan to be added ? what is a positive pressure, how would i know i have that, cheers

I did try to right an explanation, but not sure how to explain it. There's a few videos on YouTube explaining it.

Daytrader · 18 Aug 2015 at 10:59

Cheers, will give youtube a look.

Daytrader · 23 Aug 2015 at 20:33

Another question, if both of my fans i have already are 120's, for best results does that mean other 2 fans i want have to be 120 also to keep airflow correct, cheers

mushtafa · 23 Aug 2015 at 22:18

It will affect the positive/negative pressures within the case. Given two identical fan specs, but one being a 120 and the other a 140, the 140 will flow more.

Daytrader · 23 Aug 2015 at 22:28

Yeh i thought as much, so i think im better just getting 2 more the same, cheers

PieEater · 24 Aug 2015 at 07:48

If you wanted to have positive pressure inside your case it might make sense to have 2 140 intakes and 2 120 exhausts.

Daytrader · 24 Aug 2015 at 11:18

Well i have 1 x 120 intake and 1 x 120 exhaust that came with the case(cant be upgraded to 140), and room for 2 more 2 x 140 at top of case, and room for 1 x 140 or 120 at bottom of case.

D1craig · 24 Aug 2015 at 11:28

Positive pressure - more air going in than going out through fans.

The idea is the air that's not going out through fans will go out through all the little cracks corners on the case. With negative pressure this is suppose to cause the exhausts to suck air in through the cracks and corners of the case bringing dust in With it.

I would have les e the exhausts as they are and add another intake. Possibly on the bottom.

Daytrader · 24 Aug 2015 at 11:34

To me it seems positive is the way to go, so if i add one intake to bottom and see how that goes first, correct.

D1craig · 24 Aug 2015 at 12:14

It will undoubtedly be an improvement.

Daytrader · 24 Aug 2015 at 12:28

Thankyou.

Quartz · 24 Aug 2015 at 12:38

I think you should change the rear fan to draw in air rather than exhaust it. It will all go out the vents at the top.

Remember to adjust your CPU cooler's fans appropriately.

Daytrader · 24 Aug 2015 at 12:47

You mean if i just keep the 2 fans, or even if i add a intake fan at bottom, that will be 3 intake fans then ?

Quartz · 24 Aug 2015 at 13:48

Daytrader said:
You mean if i just keep the 2 fans, or even if i add a intake fan at bottom, that will be 3 intake fans then ?

Yes. There's no problem with that as there's a huge vent at the top.

PieEater · 24 Aug 2015 at 13:54

Quartz said:
I think you should change the rear fan to draw in air rather than exhaust it.

I would not do this personally, the heated air will naturally rise to the top of the case so you want to work with this process and encourage the hot air out via exhausts. Introducing a flow of cooler air running across the top of the case is just going to prevent the heated air from exiting the case properly.

Daytrader · 24 Aug 2015 at 13:57

Cheers, so many different options, will buy 1 extra fan then experiment with all your suggestions, thx

Daytrader · 24 Aug 2015 at 14:02

Well i will add one 140 intake at bottom of case first, and leave other 2 fans as they are to start.

Daytrader · 25 Aug 2015 at 12:48

Are these a good choice for intake fan at bottom ?, if i buy that i would then have 2 x 120 corsair intakes(1 front 1 bottom) and 1 x 120 corsair exhaust(back) i only have one graphic card that exhausts out the back of case.
https://www.overclockers.co.uk/showproduct.php?prodid=FG-002-CS&groupid=701&catid=2331&subcat=4

Oh, what does NF or SP mean in front of fans.

TrojanWhore · 25 Aug 2015 at 13:29

SP: static pressure; optimised for heatsinks (CPU coolers and radiators on watercooling)
AF: airflow; these fans are optimised for use on unrestricted vents, i.e. case fans, these will be the ones you want for this application.

I would also give my endorsement to akasa Apache fans, they are great value and give a fantastic airflow/noise ratio.

to stick my oar in on the configuration, if you already have a front intake and a rear exhaust, then I would opt for a low rpm top exhaust, followed by an additional higher airflow fan on the front.

I've always just stuck to the principle of overall directional airflow across the case;

intake: front and bottom
exhaust: back and top