Memory interleaving is a function of the memory controller not the microprocessor. Therefore, some Power Macintosh models based on the same microprocessor will support memory interleaving while others based on the same microprocessor will not.
For example, the Power Macintosh 7500, which is based on the PowerPC 601 microprocessor, supports memory interleaving. The Power Macintosh 7200, which is also based on the PowerPC 601 processor, does not support memory interleaving.
The difference is that the Power Macintosh 7500 uses the HammerHead ASIC memory controller which supports memory interleaving and the 7200 uses the Platinum IC which does not support memory interleaving.
The Power Macintosh 6100, 7100, and 8100 computers use the High-speed Memory Controller (HMC) which also does not support memory interleaving.
Interleaving Table:
POWER MACINTOSH
SERIES NUMBER | MICROPROCESSOR | MEMORY CONTROLLER | MEMORY INTERLEAVING |
| Power Macintosh 6100 | 601 | HMC | NO |
| Power Macintosh 6150 | 601 | HMC | NO |
| Power Macintosh 7100 | 601 | HMC | NO |
| Power Macintosh 7200 | 601 | Platinum IC | NO |
| Power Macintosh 7250 | 601 | Platinum IC | NO |
| Power Macintosh 7500 | 601* | HammerHead ASIC | YES |
| Power Macintosh 7600 | 604 * | HammerHead ASIC | YES |
| Power Macintosh 8100 | 601 | HMC | NO |
| Power Macintosh 8150 | 601 | HMC | NO |
| Power Macintosh 8500 | 604 * | HammerHead ASIC | YES |
| Power Macintosh 8550 | 604 * | HammerHead ASIC | YES |
| Power Macintosh 9150 | 601 | HMC | NO |
| Power Macintosh 9500 | 604 * | HammerHead ASIC | YES |
| Power Macintosh 9600 | 604e * | | YES |
| * Removeable/upgradeable microprocessor card |