newer pcs don't have custom parts unless specifically mentioned in the manual. these parts come with fans/heatsinks you install yourself.
when you're booting up your computer, it's possible you're confusing your cd-rom drives' spin-up cycles with the noise of your fans. they make a LOT of noise during the boot-up "floppy, cd-rom seek" etc.
this is
MOST LIKELY THE NOISE YOU'RE HEARING
it's best if you open your case up and check out what's inside. just be sure to
unplug it first.
as for variable resistance fans and temps:
when dealing with cpu temp, it's useful to become familiar with *Celsius...so anything over
52*C, IMO, is dangerous (for cpu temp).
Get yourself a Thermaltake fan with manual rheostat (variable resistor built-in) so that you can manually change the speed. just run the cord to the outside of your case, and turn the switch.
I have mine mounted on my heatsink for my cpu. when I'm running intense proggies, I turn the speed up. when I'm sleeping I (theoretically) turn down the speed.
you don't normally want a temp-sensitive fan (in my experience) because it will be forever cycling faster and slower during the day, annoying you to no end. I'd rather have a fan spinning too fast for that moment than forever speeding up and slowing down all day.
Thermaltake is a great company for fans...try the Tornado 7 or 9.
as for cpu temps: 24-52*C are normal, but try to keep it down near 38-48*C for maximum performance (my personal preference). cooling is most important when a) Overclocking (oc'ing)
b) tight case, poor airflow
c) new, 1.40+ Ghz processors used at 100% capacity for a length of time (UD, FaD, SETI, etc)
I hope this helped.
~Branson
Linear Mode
