cooling fans

[para999]

i'm reviewing the case fans in my NZXT lexa blackline case wonder if you guys can tell me what you think?
1 x 120mm rear..........blowing out
1 x 120mm side......... sucking in
1 x 80mm top........... blowing out
1 x 120mm front........ sucking in

i dont know how strong these fans are suppose to be for optimum cooling but you can only see the air movement if you place something like a piece of cloth over them.
should they be stronger or not?

 

[kevbiss1]

i have a big top fan (140) blowing out,getting rid of the hot air in the case is important but i keep at low speed and two quiet front fans,ur set up looks ok