2x 140mm or 1x 200mm for intake

[Hikaru12]

Trying to decide between two Corsair AF 140s for the front as the intake or a BitFenix Spectre Pro. What will give me the best performance per noise ratio? The case will have average restriction with a front mesh and dust filter but no issues with hard drives (as they will not be located behind the intake). Thanks guys.

[blueballs]

what's your outtakes?

[cheeze_tartz]

140 + 140 = 280

 

so 2 140's

[Hikaru12]

what's your outtakes?

 

Outake will be Corsair AF 140 as well.

[blueballs]

how many do you have

[Hikaru12]

how many do you have

 

Just one rear. I know 2x adds to 280 but the CFM of a single 200mm at the speed (900RPM) might be hard to beat but I'm no expert.

[blackadder]

you have more surface area from the 200mm.

a=pi*(r^2)

 200 mm fan=pi (100^2)=31,416 mm^2

140 mm fan = 2(pi (70^2))=30,788 mm^2 

with all that being said there are not alot of great 200mm fans out. i replaced my 200mm phanteks with cougar 140mm and i feel like i made the right choice for airflow/noise. you can have better static pressure with 140mm as well. 

edit: this is much easier if looking at 120s to 140s there is a bigger difference.  o yes, about fans i recommend cougars over corsairs or bitfenix for the price.

[Hikaru12]

you have more surface area from the 200mm.

a=pi*(r^2)

 200 mm fan=pi (100^2)=31,416 mm^2

140 mm fan = 2(pi (70^2))=30,788 mm^2 

with all that being said there are not alot of great 200mm fans out. i replaced my 200mm phanteks with cougar 140mm and i feel like i made the right choice for airflow/noise. you can have better static pressure with 140mm as well. 

edit: this is much easier if looking at 120s to 140s there is a bigger difference.  o yes, about fans i recommend cougars over corsairs or bitfenix for the price.

 

What do you recommend for 140 intakes?

 

Only problem with the Cougars is the color. If it's a white I can easily take care of that but since it's dyed orange there's nothing I can do to change it.

[blackadder]

What do you recommend for 140 intakes?

Only problem with the Cougars is the color. If it's a white I can easily take care of that but since it's dyed orange there's nothing I can do to change it.

be quiet, phantek, Fractal, Noctua (pricy), viper something, noise blockers. Im sure theres more.

Yeah the orange is strange, i can't see my front intakes so its not a problem for me. I want to say thermalbench.com had fan reviews that were good, its a members website and he does the testing. I believe thats the name of it.

[Hikaru12]

be quiet, phantek, Fractal, Noctua (pricy), viper something, noise blockers. Im sure theres more.

Yeah the orange is strange, i can't see my front intakes so its not a problem for me. I want to say thermalbench.com had fan reviews that were good, its a members website and he does the testing. I believe thats the name of it.

 

I actually have some eLoops so this might work. Thanks for the help. I was planning on using the Phanteks for the radiator but having more static pressure I guess couldn't hurt.

[Pause122]

I would say two 140s because the fans won't have to spin that fast because there are two fans but if you do the 200 it will have to spin faster because there is one fan and a faster spinning fan will make more noise

[blackadder]

I actually have some eLoops so this might work. Thanks for the help. I was planning on using the Phanteks for the radiator but haven't more static pressure I guess couldn't hurt.

eloops are pretty rare fans. You're one of the few that have some.

[Hikaru12]

I would say two 140s because the fans won't have to spin that fast because there are two fans but if you do the 200 it will have to spin faster because there is one fan and a faster spinning fan will make more noise

 

Don't 200's normally spin at a lower rate anyway? I would argue two fans usually at 900-1500 would be much louder than a regular 200mm that at max spins at 900.

[blackadder]

Don't 200's normally spin at a lower rate anyway? I would argue two fans usually at 900-1500 would be much louder than a regular 200mm that at max spins at 900.

should be or could be. Depends on the fan leading edge profile and some other junk. Rpm is probably the biggest factor we can control after said fans are bought. At 900 rpm i felt like they made more noise than the 2 140s at 1100 rpms i have. Just depends on the fans in Question.

[Hikaru12]

should be or could be. Depends on the fan leading edge profile and some other junk. Rpm is probably the biggest factor we can control after said fans are bought. At 900 rpm i felt like they made more noise than the 2 140s at 1100 rpms i have. Just depends on the fans in Question.

 

BitFenix Spectre Pro?

[blackadder]

BitFenix Spectre Pro?

nope, phanteks, better than the pros i hear, i don't really know. Fan testing is more complex than people think. And hearing is subjective.

[dfsdfgfkjsefoiqzemnd]

Right now I'd take dual 140mm ones over a 200mm anytime.  Once the 200mm Noctua is released, I may look into it again.

[Mao_Zedong]

140 + 140 = 280

 

so 2 140's

Thats not how it works. Its closer to (140^2) * 2 = 39200 vs 200^2 = 40000. There are slight differences from the axle size and from the boarder, but they are mostly the same proportions. The 200mm also only has a single motor, so it will be quieter (though slightly louder than a similar quality 140mm, as the motor needs to be more powerful).

[rjfaber91]

A 200mm will likely be quieter for the same airflow, so I'd go with that. I can entirely agree with @blackadder that the Phanteks 200mm fans are really rather good; I got one as standard in my Enthoo Pro, and simply said, it's the quietest fan in my case.