How Does Push/Pull Work? & Air Pressure & Fan Controlling

[JLCitadel]

My initial setup will have 10 Fans & Corsair H100i

I will have an asus motherboard

 

I will be adding a water cooling setup later on with 5 radiators and 14 or 28 fans. (45mm rads in a 900d, two 480, a 360, 240, and 120.

 

How do I go about controlling fans, what's the best air flow configuration? and how does air pressure work?

 

This and bios settings are my two least knowledgeable aspects of pc building. :3

[nsyedhasan]

1. I'd say get a fan that can run off of a Molex using an adapter. Also use a low voltage adapter if you want to have low speed fans.

More fans pulling air in than out.

Can't answer this one, but I think it is that if you have holes your case will pull in/push air depending on you fan configuration.

[WoodenMarker]

Use a NZXT fan controller hub or the mobo with splitters for the fans. 

Front intake to rear exhaust is best . 

Air pressure either pushes extra air or pulls in extra air depending on whether you have more intake or exhaust. 

For example, if you have more intake, you'll have more air coming in and extra air will push our the cracks in the case which keeps dust out--at least theoretically. 

 

Push/pull means a fan pushes air through the rad and the other fan pulls through the other side to pick up the slack from the other fan. This usually means you can stil properly cool with slow fans speeds but in terms of performance, it's not much better than just push or pull.

[Vindola]

My initial setup will have 10 Fans & Corsair H100i

I will have an asus motherboard

 

I will be adding a water cooling setup later on with 5 radiators and 14 or 28 fans. (45mm rads in a 900d, two 480, a 360, 240, and 120.

 

How do I go about controlling fans, what's the best air flow configuration? and how does air pressure work?

 

This and bios settings are my two least knowledgeable aspects of pc building. :3

 

This guy explains it you: 

http://www.youtube.com/watch?v=UyC3lZ5WFMk

 

Also, make sure that you have an overall positive pressure within your case. A positive air pressure means less dust inside the case. (NOTE: the word "pressure" in the video is talking about pressure of the air between the fan and the radiators, not the air pressure inside the case) 

[JLCitadel]

Use a NZXT fan controller hub or the mobo with splitters for the fans. 

Front intake to rear exhaust is best . 

Air pressure either pushes extra air or pulls in extra air depending on whether you have more intake or exhaust. 

For example, if you have more intake, you'll have more air coming in and extra air will push our the cracks in the case which keeps dust out--at least theoretically. 

 

Push/pull means a fan pushes air through the rad and the other fan pulls through the other side to pick up the slack from the other fan. This usually means you can stil properly cool with slow fans speeds but in terms of performance, it's not much better than just push or pull.

 

Alright, so lets say.. I have 10 Corsair SP120mm Performance Edition Fans

 

1 Rear exhaust behind cpu/mobo

4 below in the basement of 900d on right side

psu is exhausting out rear

3 intake fans in the front

2 fans above a h100i pulling air through

 

The mobo has 3 pwm slots, do i get 3 splitters and put 3 fans to each and have one constant mid rpm?

 

or are you suggesting I get a fancontroller in drivebay, use splitters for pwm and hook them up to it?

 

or divide that with the pwm slots on my mobo and splitters+controller in drivebay?

[Guest]

Those radiators won't all fit.

[airdeano]

My initial setup will have 10 Fans & Corsair H100i

I will have an asus motherboard

 

I will be adding a water cooling setup later on with 5 radiators and 14 or 28 fans. (45mm rads in a 900d, two 480, a 360, 240, and 120.

 

How do I go about controlling fans, what's the best air flow configuration? and how does air pressure work?

 

This and bios settings are my two least knowledgeable aspects of pc building. :3

 

on your future expenses', you can just use a simple push or pull. the XT45 series

radiators will not benefit a lot with push/pull unless you are running sub 600rpm

fan speeds. so your only now down to 14 fans. and you'll prolly rethink the

radiator count as all that will be intensively hard to fit and keep a good routing

plan.

 

fan control can be easiest using the PSU molex/SATA power and direct 12/5v

current. being reliant on another control device can get a lil hectic. depending

on fans and controller used, you might have to split channels due to the power

draw might exceed the rating causing premature failure. direct from PSU has

no POST (fan rush) speed check, won't have irregular speed/temp ramps

(excessive speed hunting on slope), one constant quiet speed.

 

air pressure would be neutral. but usually very difficult to promote due to filters,

restrictions and internal layouts. most tend to error on positive to promote less

dust accumulation through chassis unknown/unfiltered ventilation.

[WoodenMarker]

Alright, so lets say.. I have 10 Corsair SP120mm Performance Edition Fans

 

1 Rear exhaust behind cpu/mobo

4 below in the basement of 900d on right side

psu is exhausting out rear

3 intake fans in the front

2 fans above a h100i pulling air through

 

The mobo has 3 pwm slots, do i get 3 splitters and put 3 fans to each and have one constant mid rpm?

 

or are you suggesting I get a fancontroller in drivebay, use splitters for pwm and hook them up to it?

 

or divide that with the pwm slots on my mobo and splitters+controller in drivebay?

Get nzxt grids to control all the fans.

[JLCitadel]

Those radiators won't all fit.

I've seen build logs with 480 up top, 480 down right, psu down left, 240 infront of psu, and 360 for intake, and 120 for exhaust.. (I'm pretty sure) I could be wrong. The only one I've got a doubt about is the 360 fitting in the front.

 

on your future expenses', you can just use a simple push or pull. the XT45 series

radiators will not benefit a lot with push/pull unless you are running sub 600rpm

fan speeds. so your only now down to 14 fans. and you'll prolly rethink the

radiator count as all that will be intensively hard to fit and keep a good routing

plan.

 

fan control can be easiest using the PSU molex/SATA power and direct 12/5v

current. being reliant on another control device can get a lil hectic. depending

on fans and controller used, you might have to split channels due to the power

draw might exceed the rating causing premature failure. direct from PSU has

no POST (fan rush) speed check, won't have irregular speed/temp ramps

(excessive speed hunting on slope), one constant quiet speed.

 

air pressure would be neutral. but usually very difficult to promote due to filters,

restrictions and internal layouts. most tend to error on positive to promote less

dust accumulation through chassis unknown/unfiltered ventilation.

Ah wow I completely didn't know you could hook up fans directly to the PSU. Feel like a idiot now.

I'll be adding rads in slowly, I'll just be getting two 480mms at first. One up top and one in the basement, then doing a loop with my CPU & GPU & Maybe mobo, not sure if I'll want to w/c it.

 

Then as I SLI & WC Ram I'll pick up 260 and 120.

 

I know the rads are a bit overkill and I'll probably need two pumps to push through it all. (Definitely not probably)

 

But that's sorta what I'm going for.

 

As for the mention of the routing, I'll be doing custom sleeving and my routing and cable management will be a bit OCD to say the least.

 

If you wouldn't mind explaining the connection between psu and fans a bit more that'd be nice of you :3 I don't quite understand it.

[Guest]

You can't have a 360 in the front with a 480 in the bottom.

[JLCitadel]

You can't have a 360 in the front with a 480 in the bottom.

 

even if they're 45mm? I assume they're too thick or overlaping? 

[airdeano]

I've seen build logs with 480 up top, 480 down right, psu down left, 240 infront of psu, and 360 for intake, and 120 for exhaust.. (I'm pretty sure) I could be wrong. The only one I've got a doubt about is the 360 fitting in the front.

 

Ah wow I completely didn't know you could hook up fans directly to the PSU. Feel like a idiot now.

I'll be adding rads in slowly, I'll just be getting two 480mms at first. One up top and one in the basement, then doing a loop with my CPU & GPU & Maybe mobo, not sure if I'll want to w/c it.

 

Then as I SLI & WC Ram I'll pick up 260 and 120.

 

I know the rads are a bit overkill and I'll probably need two pumps to push through it all. (Definitely not probably)

 

But that's sorta what I'm going for.

 

As for the mention of the routing, I'll be doing custom sleeving and my routing and cable management will be a bit OCD to say the least.

 

If you wouldn't mind explaining the connection between psu and fans a bit more that'd be nice of you :3 I don't quite understand it.

 

the 2x 480 1x 360 will be way sufficient to roll a 3-way GPU. and adding the extra

240 and 120 won't really decrease the temperatures all that drastically. like GPU

scaling, there comes a point of diminishing return.

 

from the PSU it would be easier to purchase a hub (or 2) to supply voltage to all

fans for 12-volt service. even easier would be to gang each radiator fan set to one

hub port. thus a lot less wiring to sleeve and manage. the PSU can supply 12/7/5-volt

and can be distributed through the hub.

[JLCitadel]

the 2x 480 1x 360 will be way sufficient to roll a 3-way GPU. and adding the extra

240 and 120 won't really decrease the temperatures all that drastically. like GPU

scaling, there comes a point of diminishing return.

 

from the PSU it would be easier to purchase a hub (or 2) to supply voltage to all

fans for 12-volt service. even easier would be to gang each radiator fan set to one

hub port. thus a lot less wiring to sleeve and manage. the PSU can supply 12/7/5-volt

and can be distributed through the hub.

 

what exactly is a hub?

 

From what I gather, you get (2) hub (s) , then I believe you're saying connect the fans to a splitter for each rad, then to the hub, then resulting in less cables to sleeve and manage, and the hub will take up to 12 volts from the psu, to power the fans?

 

Do you know if the 360 fits with the two 480s?

[JLCitadel]

You can't have a 360 in the front with a 480 in the bottom.

http://www.youtube.com/watch?feature=player_embedded&v=_0Q7xF07_eg#t=152

 

Here's a guy from corsair talking about it :3

[airdeano]

what exactly is a hub?

 

From what I gather, you get (2) hub (s) , then I believe you're saying connect the fans to a splitter for each rad, then to the hub, then resulting in less cables to sleeve and manage, and the hub will take up to 12 volts from the psu, to power the fans?

 

Do you know if the 360 fits with the two 480s?

 

480x 45 and 360x 45 can fit in the basement with a single fan set and short power supply (<1200i)

quoted from TTL review. if using the longer 180mm+ PSU then the 240 would be a better option.

 

hub, a PCB using one input and several output.

 

[Str_Mape]

even if they're 45mm? I assume they're too thick or overlaping? 

Between the 480 mm rad and the front panel there will be 55mm of space so a 45 mm rad wouldn't fit with any sort of decent fan, and you wouldn't want there to be 0 gab between them anyway.

http://www.bit-tech.net/hardware/cases/2013/04/16/corsair-obsidian-900d-review/3

[WoodenMarker]

what exactly is a hub?

From what I gather, you get (2) hub (s) , then I believe you're saying connect the fans to a splitter for each rad, then to the hub, then resulting in less cables to sleeve and manage, and the hub will take up to 12 volts from the psu, to power the fans?

I recommended the nzxt grid which is a fan hub.