Buy that G5 Powermac, I've got a brand new dual 2.3 so I'm running with twice the heat you would and I've had no problems at all. Of course it raises the room temperature alittle but why pay what we pay if there is not a good cooling system along with it? The design of the fan's and the flow of air through the entire case out the back works very well. -Colt (Sorry about the attachment I can't control it, it is a Rich Text File from outlook.) -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: application/ms-tnef Size: 2698 bytes Desc: not available Url : http://listserver.themacintoshguy.com/pipermail/g5/attachments/20050610/95e268c7/attachment.bin