changing iMac hard drive

[Pyx Findlekind]

>I'm with Duane, buy a larger HD than 20 gigs. I bought an 80 gig
>Western Digital drive this week for under $80. You will get more
>storage space, as well as speed because you won't have fragmentation. I
>would get a 7200 RPM drive instead of the 5400 RPM that came with your
>iMac. Western Digital has a Special Edition drive with an 8 meg cache,
>really is a quick drive. I highly recommend those, and I hated WD for
>some many years.
>
>
>Hope this helps a bit,
>groucho


Is this 7200 RPM installed in an iMac? Is there an issue with 
overheating? Is there an increase in the noise level?
PYX