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Member Since: Jun 25, 2004
Location: Luxemburg, Europe
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Mac Specs: PowerMac G5 Dual 2GHz (June 2004), 2.5GB, Airport, black 5G iPod 30GB, white MacBook 2.0 2GB

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Originally Posted by Robert Graham
Are you saying the Mac's IDE host interface can't read SATA 2 and 3?
The G5s SATA controller is only standard SATA. SATA 2 (and probably SATA 3) drives are downwards compatible, means that, when connected to a standard SATA, they work in SATA mode, not SATA 2 or 3.
That in return means that you won't have any advantage by putting the faster SATA 2 or 3 disks in a G5, as data transfer would be at normal SATA speeds.

To use those drives, you need a SATA 2 or 3 controller card that is Mac compatible. Just keep in mind that the PowerMacs with dual core have PCI express (PCIe) while the older single cores have either PCI or PCI-X. PCIe is NOT backwards compatible to PCI/PCI-X.

And yes, both serial ATA and parallel ATA are IDE drives.
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