Improving case airflow with AF140's?

[Makaseo]

Hi guys, had a question about how much a fan upgrade would improve airflow in my Define R4 windowed.

 

Right now I got the two silent series R2 that come with the case as front intakes and an NZXT FN 140-RB as the rear exhaust, with all three connected to the case controller.

If it makes a difference, I have two SP120 QE's on a Xigmatek Dark Knight II for CPU cooling, and a GTX 760 from EVGA with their ACX cooler.

 

I found a good deal in my area for up to three AF 140's for about 30 bucks US total. I'm really tempted to buy these fans, as I'm a huge Corsair nut, but was wondering noise and especially cooling-wise, if these fans would improve my case's airflow worth a damn if I just replaced all of my current fans. I suppose I could put the Fractal R2's on the roof as exhaust and the RB-140 on the bottom, but that would probably make it quite loud.

 

Thanks for any help!

[CoolBeans]

It probably won't make a difference in temps if you just replace the existing fans

[nightlitezzz]

You will get better temps but it will  be louder. I suggest Gelid Silent 14 fans instead.

[Makaseo]

You will get better temps but it will  be louder. I suggest Gelid Silent 14 fans instead.

Are the AF140's really that much louder than the Fractal and NZXT fans?

[nightlitezzz]

Are the AF140's really that much louder than the Fractal and NZXT fans?

I did a review of the Fractal fans which can be found under Member Reviews. They are extremely quiet but move almost no air. The NZXT fans are okay but the Gelids are better. The Gelid will be quieter by a bit in comparison to the AF140 while providing almost the same airflow.