necessity of case fans...?

[dan p]

I've just switched from a dual athlon 1.4ghz to a single 2.26 P4B mainly because of the noise the athlon system made. I had two 80mm pabst fans and 2 thermoengines on the cpus and the noise did, after 6 months begin to drive me nuts! Anyway now i have a nice quiet P4 o/ced to 2415 ghz with just a Coolermaster fujiyama on the cpu and the enermax 550watt psu. I've got no case fans at all and the temps are:
CPU: load=43'c / idle 32'c
Case: load=35'c / idle 31'c
I've only had the system about 2 weeks but so far no stability probs whatsoever.. anyway my question is this - is it only worth me adding case fans if I experience stability probs or am I slowly killing my components by running it all with no case fans? Sorry for my blatent ignorance on this matter :)
cheers
dan

[Matthew]

You should bear in mind that Intel CPUS run a slight cooler than Athlon systems...
as for the system temps, they seem reasonable... but the addition of case fans will obviously lower them..
it all depends on other things - AGP graphics cards can add a substantial heat to the overall system temp - my gainward gf3 550 gets pretty hot after a good run-in... playing a good hour of GrandPrix running on full-high settings, and the chips are hot to the point of almost-untouchable - just think how much heat this adds to the system temps...

also depends on the case - if u use an aluminium case, then its better - the case will act as a heatsink and dissipate heat overall...