Some requirements for OS X 10.2
Supported Computers:[5]
PowerMac G3
PowerMac G4
Early PowerMac G5
iMac
eMac
PowerBook G3
PowerBook G4
iBook
Amount of RAM Required:
128 megabytes (MB), although 256 MB to 512 MB is highly recommended by many people who have used Mac OS X v10.2.8 as the real amount of RAM used when only the Operating System is running is around 200 MB, but it can be run with as low as 96 MB although it will not run at full speed.
Processor Type:
PowerPC G3, G4 or G5 running at 233 MHz or higher.
PowerMac G3
PowerMac G4
Early PowerMac G5
iMac
eMac
PowerBook G3
PowerBook G4
iBook
Amount of RAM Required:
128 megabytes (MB), although 256 MB to 512 MB is highly recommended by many people who have used Mac OS X v10.2.8 as the real amount of RAM used when only the Operating System is running is around 200 MB, but it can be run with as low as 96 MB although it will not run at full speed.
Processor Type:
PowerPC G3, G4 or G5 running at 233 MHz or higher.