Most Effective Spot for a Case Fan

The case came with two fans a 140 on top and a 120 on the back, but okay. And since I'm replacing the back panel fan can i use it again as an intake either on the side or front?
 
I tried it out and i realized that my stock cpu cooler does just fine, but what i did wrong is my GPU is mostly under my side fan so today I'll have to move it up :(
 
Ideally if you have more than one fan you should have one intake on the front and one exhaust on the back. After that you should add them to the top or front. Side intake fans honestly don't do a whole lot. I have one pointed directly at my GPU on the side and it doesn't drop temperatures really at all. I mainly have it there because it's a blue LED one and lights up the case nicely.
 
Okedokey said:
huh?
Click to expand...

Ok, what i did was switch my back fan with the new one i got but it didn't really make a difference plus i couldn't see the blue LED's. So what i'll do today is put the OG back case fan back in and put the new fan on the side and move my gpu up to a higher PCI-E slot so the fan cools off more of the GPU and not just the PCB. The only thing is with my GPU i have to go through A LOT just to control the fan speed.
 
I have three 140MM Coolermaster R4-L4S-10AB-GP blue LED and they light up rather nice. I thought about adding a forth, two for the front, but I still have the three old 140MM blue LED fans that came with my case.

I've not seen much of a decrease in temps either, other than the push/pull on my hyper 212 EVO. After changing out all the stock fans, temps were nearly unchanged. I even thought about $30 fans, but don't think they would make any improvement other than on the 212 EVO which I'm replacing soon. So yeah, I have to agree you may not notice much of a temp change.

I did a lot of research on pos vs neg air pressure, and mainly have my fans, all the 140MM as intake. Only a single 120MM exhausting air. If you count all the vents in cases these days, there should be more than enough for all the air coming in to get out.

I even went through and tested my fans @ 100% speed with a Molex connector, compared to PWM on the motherboard, not much of a difference. two degree's honestly @ stock clocks. Guess it's worth it though.
 
Positive pressure provides the least performance and best dust control. If you want best performance Currency, have the most amount of air actively leaving the case.
 
Then you'll get a bunch of dust bunnies in the case, more often than not since my case only has two dust filters. Front and bottom. I switch the direction all the time on my top fans, but plan on adding another 140MM intake to the front and cleaning the case up a little soon.

My home was built in the 1930's. Mostly untouched since then except a few rooms. Plan to remodel a little in the spring and fear all those years of bunnies will come out and attack my computer. I'm down to 1.5 cans of compressed air and think I'll need more by then.
 
Yes, but the OP asked for the most effective, not the best for your old house.

The most effective is negative pressure, with exhasust at top.
 
Running my system with positive pressure, I along with many others have seen 2 degree drops, or more. So I have to disagree that negative is the most effective. Early this year I took around 40 hours of testing and research to reach this conclusion.

But just like applying TIM, it's a matter of personal preference or opinion in the end. Both Pos and Neg have benefits and drawbacks.
 
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