Air Flow Question

[Ekst4zy]

Hi!

 

I have a x62 with 2x140mm fans in front set to exhaust (through a radiator). I also have 2x120mm fans as intakes.

 

Is that optimal? I'm planing on adding additional 120mm fan as intake, but it will ge through a radiator as well (h55 for my GPU)

 

Thanks!

 

Picture:

 

 

@Edit

 

I just noticed that the very back 120mm is set as exhaust on a picture... it's actually an intake now. Another one in on the roof

[Spork829]

Well you've got it totally backwards compared to how most setups work, being intake in the front/bottom and exhaust in the top/back. I would swap everything around so that the fans on the radiator are intakes, and then make the top and rear ones exhaust. 

 

Also where are you planning to put that additional fan and H55? The bottom?

[MrPants_]

I do believe JayZTwocents or BitWit made a video about this, don't be scared to have the front as intake, won't affect performance much really. 

[PacketAtlas]

I would have the back fans exhausting because they are higher up, since hot air rises it would be perfect.

[Ekst4zy]

29 minutes ago, Spork829 said:

Well you've got it totally backwards compared to how most setups work, being intake in the front/bottom and exhaust in the top/back. I would swap everything around so that the fans on the radiator are intakes, and then make the top and rear ones exhaust. 

 

Also where are you planning to put that additional fan and H55? The bottom?

I just swapped it again. Now I have both 120mm top as intakes (I will add 120mm h55 on the back) and two 140mm as  exhaust.  Backwards? what do you mean? It's air  My only question was if my exhaust/intake ratio is fine.

 

@Edit

 

I guess it makes sense... damn, I will change it when I will be installing my g10

[PacketAtlas]

10 minutes ago, Ekst4zy said:

I just swapped it again. Now I have both 120mm top as intakes (I will add 120mm h55 on the back) and two 140mm as  exhaust.  Backwards? what do you mean? It's air  My only question was if my exhaust/intake ratio is fine.

You either want your exhaust pushing out as much air as the intake is pulling in, or a little more intake than exhaust. 

[Ekst4zy]

Just now, PacketAtlas said:

You either want your exhaust pushing out as much air as the intake is pulling in, or a little more exhaust than intake. I usually run 3 exhaust fans(top/back mounted), and 2 intake fans. (front mounted) 

That's exactly opposite of what Jay is saying in his video. more intake and less exhaust creates positive air pressure and that's what I was going for. Also, I have dust filter on the top and no filter at front. 

[PacketAtlas]

1 minute ago, Ekst4zy said:

That's exactly opposite of what Jay is saying in his video. more intake and less exhaust creates positive air pressure and that's what I was going for. Also, I have dust filter on the top and no filter at front. 

Haha I saw that I wrote that backwards, I changed it  Positive pressure (intake>exhaust) means less dust.

[thegoogler]

38 minutes ago, PacketAtlas said:

Haha I saw that I wrote that backwards, I changed it  Positive pressure (intake>exhaust) means less dust.

Well; it depends if you have more air coming in you are bringing more air in (more air = more dust lower temps) and you will have air trying to escape through little cracks in your case and filling heatsinks with dust if not cleaned. weather with negative air pressure you have less air coming in (less air = less dust but higher temps) but you will slow down the rate that your heatsinks, fans etc, fill up with dust. if you have bigger fans you will have more air being exhausted so I would add another 120mm fan as intake which would add more noise but it would be worth it.

 

hope this helped.

[PacketAtlas]

48 minutes ago, thegoogler said:

Well; it depends if you have more air coming in you are bringing more air in (more air = more dust lower temps) and you will have air trying to escape through little cracks in your case and filling heatsinks with dust if not cleaned. weather with negative air pressure you have less air coming in (less air = less dust but higher temps) but you will slow down the rate that your heatsinks, fans etc, fill up with dust. if you have bigger fans you will have more air being exhausted so I would add another 120mm fan as intake which would add more noise but it would be worth it.

 

hope this helped.

Well actually if you use filters in the front where it intakes(which most of the time you do), and you have positive pressure(more intake than exhaust)  less dust will accumulate. 

[thegoogler]

3 hours ago, PacketAtlas said:

Well actually if you use filters in the front where it intakes(which most of the time you do), and you have positive pressure(more intake than exhaust)  less dust will accumulate. 

 

oh, ok thanks for telling me