I have only IDE drives but I can get SATA cheap on ebay to test, what's bugging me is why the need to make this system that big?
PM G5's are the same size as Mac Pro's (if you're familiar with Mac Pro's). Basically (back in the day) PM G5's were the "Mac Pro's" of that time.
The size...is mostly for expandability:
- 4 PCI, PCI-x, or PCI-e slots
- PM G5's may only have 1 optical drive slot, Mac Pro's have two.
- up to 8 ram slots
- room for dual cpu's, and the big heat sinks to go with them
- two internal HD slots
PM G5's also were hard to cool (they had 9 fan's & 4 thermal zones). If you take the metal side panel off...the first thing you see is a large polycarbonate (plastic) insert which helps to funnel the cooling air to the right places (and this needs to be removed to access the inside).
Finally...if you cannot locate the power supply...it's in the bottom of the case. Most of the innards need to be removed to remove/replace the power supply (if necessary).
I'm thinking these are reasons for the big case...maybe size makes them look powerful as well!
- Nick