Mac Classic II

The Classic II uses the same 16 MHz 68030 CPU and 16 MHz 68882 FPU as the SE/30, the model it replaced. The computer was tested with the same external drive used for Speedometer 3 on the SE/30; the internal hard drive was also benchmarked.

Remember that benchmarks are arbitrary. They measure certain types of performance that may or may not reflect the way you work.

Speedometer 3.06

The Classic II was tested on 8 October 2000 under System 7.5.5 using both an external 160 MB hard drive and its internal 80 MB drive.

cache    CPU   graphics  disk    math
 32KB    4.00    3.49    2.30    5.60
 64KB    4.00    3.45    2.30    5.43
128KB    4.01    3.49    2.26    5.54
256KB    4.01    3.49    1.91    5.42

Disk tests for the internal drive were slightly lower at 1.92 (32k), 1.92 (64k), 1.90 (128k), and 1.70 (256k). With this particular setup, the smaller disk cache provides the best performance under Speedometer 3.

The big question, of course, is how well it compares with the SE/30. In a nutshell, not too poorly considering how much less it cost and the limitations of the hardware design (see our Road Apple article for details.) CPU, graphics, and disk performance (using the same external drive) are 94% of the SE/30, while math performance is at the 84% mark.

Speedometer 4.02

The computer was tested on 8 October 2000 under System 7.5.5. Results are relative to a Quadra 605, which rates 1.0. Numbers rounded off to two decimal places.

These numbers compare performance at different cache settings.

cache    CPU   graphics  disk    math
 32KB    0.25    0.15    0.90    0.81
 64KB    0.25    0.15    0.90    0.78
128KB    0.25    0.15    0.90    0.78
256KB    0.25    0.15    0.75    0.80
ST2.1S   0.25    0.15    1.17    0.78

The final test is with our benchmark drive, an external Quantum ST2.1S with System 7.5.5 installed and extensions off. This test demonstrates that the Quantum LP40S inside the Classic falls well short of the computer's limited SCSI potential.

Disk tests for the internal drive were slightly lower at 0.75 (32k), 0.75 (64k), 0.75 (128k), and 0.67 (256k). As with Speedometer 3, performance suffers at the 256k mark.

The cache setting should have little influence on non-disk tests, which these numbers bear out.

The big question, of course, is how well it compares with the SE/30. In a nutshell, not too poorly considering how much less it cost and the limitations of the hardware design (see our Road Apple article for details.) CPU and graphics performance are just the least bit behind the SE/30, while math performance is at the 84% mark. Disk performance is probably close, although the Classic II and SE/30 were not tested with the same hard drive.

Hard Drive and Memory Speed

The newest addition to our benchmark suite is TimeDrive 1.3 (available here), which measures drive throughput. This can test a floppy, Zip, hard drive, or RAM Disk. TimeDrive is fairly primitive; the benefit of that is being able to run it on very old Macs.

The Quantum LP40S is a older, slower SCSI hard drive that was common when the Classic II was on the market. We also tested our default external drive, a Quantum Fireball ST2.1S. Finally, to measure how fast the computer accesses memory, we also tested ramBunctious, a great little shareware RAM Disk program. (Numbers are KB/sec.)

drive              write     read 
Quantum LP40S        629K   1,005K
Quantum ST2.1S     1,165K   1,367K
ramBunctious       2,419K   2,368K

Tests with other Macs show the ST2.1S runs faster then 4 Mbps, so the 1,165K write and 1,367K read ceilings seems to be a limit on the Classic II's SCSI throughput. In comparison to the SE/30, which the Classic II replaced, write is only 78% as fast and reads just 74% as fast.

These tests show why the Classic II was considered a poor replacement for the SE/30 as a network server. Where the SE/30 could saturate a 10 Mbps ethernet network with drives of that era, the Classic II could not.

Finally, the ramBunctious benchmark shows that the memory bus on the Classic II averages about twice as fast as the SCSI bus. This is undoubtedly due to the 16-bit memory path.