Hello I have an iMac 17" G5 that I can't throw away, I bought it years ago and it's now relegated as a guest bedroom computer. Generally it's a pleasant machine, with good speakers, and makes an excellent DVD movie watching station or music appliance. The PROBLEM however, is that no matter what you do, the hard disk temps are always between 47-60C, most usually at 50-52C. Obviously this is very high, and I've already replaced the hard disk a few times since I bought the unit. My QUESTION here is this; * Did anyone else notice, that as CPU temps increase, and therefore CPU Fans RPM increases, that HD temps go DOWN, as air is flowing over the disk and/or exhausting the hot air better? * Did anyone ever figure out a way to mod the chassis and/or fan control, to increase HD fan speed, without cutting a hole in the back of the chassis for a PC-style fan? * I'm using a single platter Seagate 7200.7 40GB disk, which is the coolest hard disk that you could probably buy, and still, it's >50C all the time. Forget about using something faster, like a 7200.11 or a WDC, it would be 60C+ nonstop - this is absolutely shameful All of this, in a fully air-conditioned room with ambient temps of 22-24C, and please consider that ALL dust has been blown out, I've completely disassembled the machine and removed the lower fan's air shroud in an attempt to ease air flow. BTW, I will add that removing that shroud around the lower fan made a MAJOR improvement as it took away that horrible pitch that the lower fan would make. At any rate, I know this is probably not a relevant topic as now it's been years since this machine was produced, but maybe someone has any ideas about how to mod the fan controller to increase RPM speed on the HD fan, or ny other ideas. I will ALSO add, that I tried using a 2.5" laptop hard disk, one of those 5400.3 Seagates (120GB) in an attempt to run a cooler system, and YET STILL, it ran that 2.5" hard disk at >50C which is absolutely unbelievable, obviously the system is blowing all the hot air out of the CPU directly onto the hard disk. What a horrible design. Any ideas, please let me know, this could be interesting for the people still using these systems as "daily drivers" Take care & regards Vasili btw this is about a 17" RevA iMac G5 1.8 ps2- if you change "Energy Saver" settings and set it to "Low speed" on CPU, sure it won't get so hot, but... is that really a solution, the machine is slow as molasses as it is..