The i7 fans are usually quiet, the 9400GT doesn't have a huge
monster fan like the ATi HD4870 or GTX295. Think should be be i7
fan, cause I use Q6600 Overclocked + 9500GS, only noisy when fan
was speeded up to 70%. Since your mobo chipset is Intel, did they
give you Fan Control utility? Cause I use nTune on NVidia mobo, and
I cant set the fan speed.
OT: Why 9400GT?
Gigabyte 9500GT no stock, so go for 9400GT, just for temporary
use.
Waiting for the next PC show, later get a better gaming card
like 4870 1GB.
Fan Control utility, not sure, will go check later.
btw, reduce the fan speed will fry the mobo?