Its a shame that I cannot speak English as good as you two...though i got 5 years older than you.
(There is no doubt I am weak in English because i seldom use that and even do a practice .

)
Anyway, its also alternative of two 8-cm fans or a 12-cm one of my case.
I agree with LCChang that 12x12cm is a better choice because that is less noisy and more air flowing per area.
P.S.1
I just found the LCChang's signature is so similiar to mine....Is that just a coincidence?
P.S.2
Sorry about my dammit English. But i should still remind you PCDVD is a Chinese Forum.My point is that not everyone can figure out what you say.
If its really nessesary you need an English practice, plz come to this kinda side:
ht...