On Apr 28, 2004, at 7:07 PM, ruth wrote: > i have a similar older imac, slot loading, 500 MHz. i believe it does > not have a fan. i'd like to replace the noisy 40 GB hard drive with > something 80 to 120 GB. do i have to be concerned about the heat > generated by a 7200 rpm drive? or am i limited to 5400 rpms or less? > thanks, > ruth Most modern 7200 RPM IDE drives run rather cool, especially compared to their elders of a few years ago. Take a look at http://www.storagereview.com for reviews with temperature ratings. Phil