Currently, in addition to the PSU fan, the stock e2180 CPU heatsink fan and the (stock) 120mm case fan, there are two 80mm fans (one on the CPU vent, one in the case front).
It ain't so quiet. I don't need silent, but quieter should be achievable.
I'd very much like to reduce the noise and, if possible, the number of fans.
The components are:
Antec NSK4480 (includes the Earthwatts 380w PSU)
Pentium E2180 Allendale 2.0GHz
MSI NX8600GT-T2D256EZ GeForce 8600GT 256MB GDDR3
Crucial Ballistix 2GB (2 x 1GB) (PC2 6400) DDR2 800 SDRAM
Can folks suggest
i) which, if any, fans I can likely safely do without (and how hot is too hot, btw -- Speedfan currently reports 40-46C for the cores, depending on load -- I think 65C is Intel's recommended max. temp)
ii) which fans I'm likely to most benefit from replacing with quieter fans?
iii) whether replacing the stock CPU heatsink with a third-party upgrade would be worthwhile.