How many fans are necessary.

[Katyusha Strike]

The case I'm planning on getting only has two fans, I'm getting another fan to go with it just to be safe but I was wondering if three or two fans are enough. The case in question is the fractal Design Define R5.

 

[Dark Lord of Tech]

Never hurts to have an extra fan.

 

[cdabc123]

one of my computers has 1 fan the other has 12 they both run pretty cool

 

[USAFRet]

The case I'm planning on getting only has two fans, I'm getting another fan to go with it just to be safe but I was wondering if three or two fans are enough. The case in question is the fractal Design Define R5.

You need only as many as it takes to move the air properly.
2, 5, 10...all depends.