How to achieve possitive air pressure in a fractal design define r5?

[gasolin]

I have ordered the fractal design define r5 and i want to keep it quiet,silent but also okay cool and free of dust, i have 6x 120 mm scythe slip stream 800 rpm fans and of course the 2 fractal 140 mm fans, my cpu cooler is a noctua nh-d15, i think i don't need any fans in the side panel since i only have one gpu and at the bottom i don't think i can have one fan because i have a big psu, a evga supernova 1000 p2 have also read it's not making any temperature difference worth the extra noise using a fan at the bottom, i also dont want to use the top (because of the noise) with exhaust fans

So how do i best without no noise (many fans) get positive air pressure, use only my scythe slip stream 120mm 800 rpm fans (3 so i can connect them to my mb, asus vii ranger z97) more then 3 fans or use the 2x 140mm fractal fans in the front (intake) and for the rest use my scythe fans or buy a 120mm fratcal fan as an exhaust(same sound,noise....), have a nzxt sentry mix 2 so i can individually control up to 9 fans with different speeds if i want to.

So more intake then exhaust fans or exhaust fans at low rpm mabye 300-500 rpm and intake fans a bit higher like 500 rpm or higher?

 

[das_stig]

2 fractals in the front and a scythe at the rear, so you're sucking in more air than exhausting, but the open vents will take care of excess heat and reduce dust intake.

 

[gasolin]

That's what i was thinking since fresh air is important, but would depend on how silent the fractal dynamic 140mm fans are, my scythe fans are are very silent.

What about my cpu cooler and gpu? 2 big and 2 small fans

 

[das_stig]

I have done two R5 cases for friends and moved the rear fan to the front as they are the same model and put in a spare no name at the rear and the gpu and cpu fan make more noise.

CPU should use the biggest ones that fit, as a large slow RPM fans are better than small fast rpm fans and normally quieter and use temp. monitoring of the motherboard to control rpm.

 

[gasolin]

Sounds good