Hi there, I have just bought of ebay a powermac g5 dp 1.8Ghz 4GB ram for £180. I am using this for DAW. Before I was using a iMac G3 but was a little slow. I have looked all over the internet but can't find the measurements of the fans in the PMG5. Please could someone tell me! Also, what are PCI-X? Will normal PCI cards fit? It does not come with an OS and I have leopard and tiger CD's. Which would run better/faster? The programs I will be mainly using are garageband and Logic Pro 8! If I buy a SATA III or SATA III will it work?