adding case fans....

[Weed]

I am planning to add two 80mm case fans, one as an exhaust fan and one as a intake fan.
The exhaust fan will be placed under the power supply and the intake fan will be placed under my floppy drive. How much difference in temp should I expect from those mods to my case?

btw, my MB temp is about 36 to 38C and my CPU is around 48C

A Globalwin FOP32 is on the way.........

I guess I should mention my system specs:
Duron650@750 with nasty stock HSF
asus a7v 1004D bios
asus geforce DDR

the temps I posted above are reading with an open case. I am a bit concerened about my MB temp(the FOP32 should take care of my CPU). When the case is closed, my MB will reach 40C after quake3.

 

[Klosters]

Without your present cfm throughput, it's impossible to say. If you already have one 80mm intake and one 80mm exhaust, you'll essentially be doubling your throughput volume. If you spring for Panaflo 47 cfm 80 mm's(x4) you'll have ~95 cfm. This is about the right value for Duron boxen. IMHO.