Fan setup for NZXT phantom 820, help if you can o/"

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xxcrimsonspiritsxx

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So I got this case with its 4 stock fans (front intake 200mm, side intake 200mm, rear exhaust 140mm, top exhaust 200mm) and my AIO is kraken x62 with a 240mm radiator.

My issue is, how do I setup the fans in a way where it creates healthy positive pressure?

And a quick bonus question here:
The pivot fan inside the case, is that considered an intake or exhaust fan?

Thank you for your time
 
Solution
jr9
No worries, we'll make sure it's positive pressure. That case supports up to 9 fans I believe and is very accommodating. The tubes are 400mm long. Here is an image of the same case with a Kraken x61 cooler which uses the same length tubing. It looks like it would reach the bottom. Hard to say; it's a monster case. The bottom drive bays would have to come out obviously. I'd advise against fans in the bottom if you have your case on the floor (especially carpet) as it will draw in more dust.

There are tons of fan configurations so your imagination is the limit. Your config is positive pressure and would work in the event you were forced to do a top mount. The bot fans should be 2x140mm or 2x120mm fans (or a complete radiator) you...
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jr9

jr9

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Radiator in the top + default fan setup and you should be fine. I have a similar model and I run it with the top and side fans disabled and I still don't have temp issues. The pivot fan inside I don't believe is exhaust or intake as it has no relationship with the air outside the case.
 
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xxcrimsonspiritsxx

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So the radiator on top, then the top case fan also on top... ? Is this like a push and pull setup for the top side?

And also, wouldn't that make the air pressure negative? .. 4 exhaust and 2 intake?
 
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jr9

jr9

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It would actually be negative and give you better temps overall. The only advantage to doing a positive pressure setup would be dust reduction but NZXT Phantom models have good preinstalled dust filters. If you are set on positive pressure even though a lot of people will tell you it's not ideal, you could move the radiator to the bottom spot near the PSU and have that as intake.

Positive, pull or push configuration on rad:

+ 1 front
+ 1 side
+ 1 bot (rad fan 1)
+ 1 bot (rad fan 2)
- exhaust
- top

(could also do push pull in bot but that's a lot of fans)

Negative, push configuration

+ front
+ side
- top rad fan 1
- top rad fan 2
- rear exhaust
- top exhaust (optional)

Minimalist/quiet negative like my NZXT Phantom 410

+ front
- top rad fan 1
- top rad fan 2
- rear exhaust
 
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xxcrimsonspiritsxx

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My problem is that I'm germaphobic to a degree and having my PC collect dust is just a no no for me, otherwise I would go negative P all the way, but even with the dust filters, gaps in the case can accumulate dust :c Its a sad sad first world issue

I would let the rad down bot but I hardly think the tubing reaches tbh, haven't unboxed the kraken yet, but have you seen the size of the phantom, it's way bigger than I thought


I'm thinking of the following setup:
-front 1x200mm
-bottom 2x200mm
-pivot 1x200mm
-top 1x280mm rad
-rear 1x120mm

Do you think the case supports this set? The case website throws a lot of numbers but not enough combination of fan setups, but anyway if you can throw me a positive setup without the rads going bot, I'd appreciate it a lot, my mind just can't seem to be thinking anymore I'm doing all this for the first time and trying not to mess up anything
 
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jr9

jr9

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No worries, we'll make sure it's positive pressure. That case supports up to 9 fans I believe and is very accommodating. The tubes are 400mm long. Here is an image of the same case with a Kraken x61 cooler which uses the same length tubing. It looks like it would reach the bottom. Hard to say; it's a monster case. The bottom drive bays would have to come out obviously. I'd advise against fans in the bottom if you have your case on the floor (especially carpet) as it will draw in more dust.

There are tons of fan configurations so your imagination is the limit. Your config is positive pressure and would work in the event you were forced to do a top mount. The bot fans should be 2x140mm or 2x120mm fans (or a complete radiator) you can't do 2x200mm I don't think. So:

If you can't do bot radiator:

+ front: 1 x 200mm (included)
+ bot: 2x140mm (not included)
+ side: 1 x 200mm (included)
- top: 2 x 140mm rad fans
- rear: 1 x140mm (included)

Intake: 680mm (or 480mm if you ditch the side fan) , Exhaust: 420mm

or if you can do bot mount:

+ front: 1 x 200mm (included)
+ bot: 2 x 140mm radiator fans
+ side: 1 x 200mm (included)

- top: 1 x 200mm (included)
- rear: 1 x140mm (included)

Intake: 680mm (or 480mm if you ditch the side fan) Exhaust: 340mm

left out the pivot fans because they are optional, are not intake or exhaust I don't believe just direct airflow.
 
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Solution
Karadjgne

Karadjgne

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Top: 280mm set as exhaust, cpu controlled.
Rear: 140mm set as exhaust, from case temps
Pivot: not needed
Side: 200mm set for intake, very low rpm, 400-500 range
Front: 200mm set intake from case temps
Bottom: not needed.

That's far beyond any necessary flow with what a 200mm is capable of.
 
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xxcrimsonspiritsxx

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Seems very reasonable, I'm going with that



UPDATE: I installed everything before I read the reply, here is what I did

exhaust:
2x140mm top rad
1x120mm rear

intake:
1x200mm front
1x200mm side
1x200mm bottom

(now I know that the case doesn't fit a 200mm bot, but with a little bit of tinkering I was able to install it and got it to intake with a dust filter of the case bellow it and a delicate dust filter mesh on it's exact head so I really doubt any dust is coming from there) ...... It's just..... I just like to tinker okay! *-*


I DID notice one thing though.... I'm not sure if it's normal or not, but the exhaust fans on the top rad (the 2x140mm) doesn't "feel" like it's pushing much air honestly... while the read 120mm is a beast, so I'm thinking, maybe because a radiator fan will have no need to work 100% while there is no load on the CPU (temp 30c) specially since I didn't even install windows yet and I'm just working on the bios for now, sooo.. No actual stress = No serious RPM ? ... maybe


I will adjust to your proposed setup though, seems reasonable
 
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Karadjgne

Karadjgne

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It's a balance. As you say, there's not much load, in bios expect cpus to be in the mid 40s to 50°C range. That's chump change to that cooler, so the fans will not be expected to be pushing high rpm. With an aio, the only real source of heat is the gpu, so there's no reason for the massive amounts of intake with 3x 200mm fans, just the 200mm intake set for case temps and the side 200mm set permanently on low rpm. Air FLOW is far more important than stuffing air into a case, that goes nowhere. Side fans create turbulence, which disrupts good Flow from front low to rear high. You want the air to move in/out, not go round in circles. Too much intake and not enough exhaust is just as bad as too little intake and too much exhaust, the air doesn't move since fans are starved.
 
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xxcrimsonspiritsxx

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So with 3x200mm intakes (front, side, bottom) should be set low, while the 2x140mm top and 1x120mm back should be set high?
 
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Karadjgne

Karadjgne

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Intakes set to case temps, which will be low anyway with an aio cooler. Set to case temps, when you get into heavy gaming, the gpu will start heating the case, so the fans might kick up a notch to compensate. The cpu fans set to cpu temps, when under loads, the cpu heats up, fans spin up. The rear exhaust I'd set to case temps too. There's absolutely no benefit to listening to fans set at high rpm, when the pc is idling and not doing any work.

So set them to variable temps, when the case gets warm, fans increase airflow, when it's cool, it's silent.
 
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