Which fan should I pick and how many?

[strangeguru]

Hi tomshardware,

I've figured I could split a 3 pin slot and a 4 pin slot with a cable or hook my case fans up to my PSU, so there is no limitation in case fans. I was wondering how many fans I should add to my CM 690 III non window case. The case comes with a 200mm front and a 120mm rear.

I was thinking of adding two Corsair AF120 Performance Editions on the top of the case. I could also opt for Scythe Slip streams 1200 rpm which is much more budget friendly. Should I also add a fan on the side of the case or on the bottom of the case? I'd like to know how many I should place where, and whether I should opt for the AF120s or the Slip Streams. I can get 4 Slip Streams (6,50 EUR each) for the price of two AF120s (15 EUR each), but the 7V cable that comes included with the AF120 appeals to me. I have very little knowledge about case fans, optimal air flow, positive and negative pressure, airflow vs static pressure, etc.

 

[Dark Lord of Tech]

https://www.youtube.com/watch?v=sh6F2eccMec

 

[strangeguru]

I'll pick negative air pressure because my case fill filter out most dust. I only have a 4 pin connector and a 3 pin connector, for the 2 fans that come with my case and the 2 fans (or maybe even more) that I'm going to buy. I'll also have a 3 pin CPU header open, but not sure if I can use that for my fan (mobo: asrock z75 pro3). I guess I'll use a Y splitter for the 2 CM Case fans in the 3 pin connector and a voltage adapter in the 4 pin connector, and then a y splitter in the adapter which connects to the two Corsair AF120s? Would this build: http://gyazo.com/a040cc8f3ff698ad3a9adbaf4faf87de then suffice? The CPU cooler is a hyper 212 evo. I might have it all wrong!!

edit: green boxes are the fans im going to add, maybe I need to add one on bottom and/or on the side panel?

 

[Dark Lord of Tech]

Yes.

 

[Dark Lord of Tech]

Don't worry about side or bottom , others will suffice.

 

[strangeguru]

Don't worry about side or bottom , others will suffice.

Great, thanks for the fast response. Last few questions: the thing I said about the Y splitters: does that work? If so; I've read something about not exceeding 1A on a 3pin with adding too many fans; is that an issue here? And also, would you get two AF120s or four Slip Streams (i'd have to plug em to the PSU)? Many thanks!!!

 

[Dark Lord of Tech]

No more than 2 on one header is the way to proceed.

AF120 , Slip Streams are loud.