200mm fan vs 2 140mm fans!?!?

grav varma · Jun 28, 2014

going to buy the phanteks enthoo pro, which comes with a 200mm fan in the front as intake. i am just wondering would it be better to replace this fan with 2 140mm fans from noctua, or just leave in the 200mm. i also plan on installing a 120mm fan inside on the drive cage which is infront of the 200mm fan intake

thundervore · Jun 28, 2014

2x 140mm will be better than a single 200mm. a 200mm fan is best for unrestricted airflow. Once you place a fan filter and/or case mesh in front of a 200mm intake fan it dramatically decreases the air flow. Also 2x 140 will focus the air more better than a single 200mm

I've experienced this with the HAF 912 Advanced CM Megaflo fans and found 2x smaller fans pushed more air through the drive cages than a single larger fan that pushed all the air around the drive cages and towards the side panels. But for exhaust a 200mm fan is better than 2 smaller fans for the sake of positive case pressure, surface area, and less noise.

Dalton Nabors · Jun 28, 2014

A 200mm fan has more area (2 140mm~30787.6², 1 200mm~31415.9²), so if the 200mm fan is a decent pressure optimized fan, I say save your money on the 2 140mm Noctuas, and just add a good 120mm (pressure optimized) behind the drive cage.

*note That is a good looking case, I might just get one.

grav varma · Jun 28, 2014

Dalton Nabors :

but the thing is is that the 200mm is ths stock included fan, and i don't know if it is good enough or needs to be replaced

Dalton Nabors · Jun 28, 2014

That is why I said IF it was a decent fan. I've had cases that came with fairly good fans, and some with fans that looked like they came off of a 1995 Gateway.

thundervore · Jun 28, 2014

There aren't any good 200mm fans out there that can be use for intake. Only exhaust. Its best to use 2x 140mm static pressure fans for intake.

ioannis2015v · Jan 31, 2019

Me, I would suggest you not to waste money substituting the fans, but if you want, you could buy another fan for the top or bottom (wherever your case supports it) I think you will be ok with these 2 too for now, but you can always buy more fans

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200mm fan vs 2 140mm fans!?!?

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