Alternative fan for heatsink.

[Inteless]

Just an fyi. this was news to me but it may be old hat.
for those who can't bear the Delta 38cfm screamer (like me)
but need something better than the YS Tech 26cfm, you
can get a Delta 60mm 30cfm, 39dba fan right here

Inteless

 

[ivanov]

39 dba... might still be pretty loud