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Pre-Intel Mac Upgrade Cards - By Compatible System: iMac G3
The following processor upgrade cards from Newer Technology, PowerLogix, and Sonnet are compatible with tray-loading iMac G3 models (those with 233 MHz, 266 MHz, and 333 MHz processors). The upgrades from FastMac are logic board swaps for some slot-loading models.
Also see: iMac G3 Q&A.
| FastMac | Processor |
| 466 MHz PowerPC 7400 (G4) | |
| 550 MHz PowerPC 7410 (G4) | |
| Newer Technology | Processor |
| 466 MHz PowerPC 750 (G3) | |
| 433 MHz PowerPC 7400 (G4) | |
| PowerLogix | Processor |
| 400 MHz PowerPC 750 (G3) | |
| 500 MHz PowerPC 750 (G3) | |
| 400 MHz PowerPC 7400 (G4) | |
| 450 MHz PowerPC 7400 (G4) | |
| 500 MHz PowerPC 7400 (G4) | |
| Sonnet Technologies | Processor |
| 500 MHz PowerPC 750 (G3) | |
| 600 MHz PowerPC 750cx (G3) |
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