The 600Mhz definitely has a fan. Here's a picture of the inside of my 600Mhz iBook when I took her apart to upgrade her HD: http://jo-ham.com/graphics/ibookupg/hd-rm.jpg Joe On Wednesday, May 7, 2003, at 18:16 Europe/London, Roberto wrote: > > > Until last december, anyway, I had a 600MHz iBook, and if I remember > well, > when I disassembled it to upgrade its hard drive, I didn't notice any > fan. >