Updated Leopard requirements to exclude 800MHz systems

Apple has yet to officially announce the hardware requirements to run Leopard, due out in October, but had long stated in developer documentation that the software would require "an Intel processor or a PowerPC G4 (800MHz or faster) or G5 processor." Engineers determined that Leopard installs on 800MHz PowerPC G4 systems ran "too slow." Support for those systems was subsequently pulled from the most recent pre-release copies of Leopard, which inform testers that the software "cannot be installed" on those computers.

Instead, Leopard will now require Macs with "an Intel processor or a PowerPC G4 (867 MHz or faster) or G5 processor." Other system requirements include a DVD drive, built-in FireWire, at least 512MB of RAM (additional recommended), and at least 9GB of hard disk space.

The 67MHz increase will exclude the 800MHz PowerBook G4 (Titanium), 800MHz PowerMac G4 (Quicksilver), 800MHz iMac G4, 800MHz iBook G4, and 800MHz eMac.

Mac OS X 10.6 could exclude support for PowerPC-based Macs entirely, requiring that users have one of the company's Intel-based systems which first began making their way to market in early 2006.