| Current Macintosh model | Current clock speed | Speed with Power Macintosh Upgrade Card | Speed with Macintosh Processor Upgrade |
| Quadra 950 | 33 MHz | 66 MHz ! | N/A |
| Quadra 900 | 25 MHz | 50 MHz ! | N/A |
| Quadra 840av | 40 MHz | N/A | N/A |
| Quadra 800 | 33 MHz | 66 MHz ! | N/A |
| Quadra 700 | 25 MHz | 50 MHz ! | N/A |
| Quadra 660av | 25 MHz | N/A | N/A |
| Quadra 650 | 33 MHz | 66 MHz ! | N/A |
| Quadra 630 | 33 MHz | 66 MHz ! | 66 MHz |
| Quadra 610 | 25 MHz | 50 MHz | N/A |
| Quadra 605 | 25 MHz | N/A | 50 MHz |
| Centris 660av | 25 MHz | N/A | N/A |
| Centris 650 | 25 MHz | 50 MHz | N/A |
| Centris 610 | 20 MHz | 40 MHz | N/A |
| Macintosh IIvi | 16 MHz | N/A ! | N/A |
| Macintosh IIvx | 32 MHz | N/A ! | N/A |
| Macintosh IIci | 25 MHz | N/A ! | N/A |
| Macintosh IIsi | 20 MHz | N/A ! | N/A |
| LC 630 | 33 MHz | N/A ! | 66 MHz |
| LC 575 | 33 MHz | N/A ! | 66 MHz |
| LC 475 | 25 MHz | N/A ! | 50 MHz |
| Performa 630 series | 33 MHz | N/A ! | 66 MHz |
| Performa 600 | 32 MHz | N/A | N/A |
| Performa 575, 577 & 578 | 33 MHz | N/A ! | 66 MHz |
| Performa 475 & 476 | 25 MHz | N/A ! | 50 MHz |
KEY:
! - Separate Upgrade Card offered by DayStar Digital.
NOTES:- Power Macintosh Upgrade Cards are customer installable.
- Macintosh Processor Upgrade includes a PowerPC 601 Processor with 256K level-2 cache, expandable to 1MB.
The upgrade must be installed by an Apple authorized service provider.