Mac Color Classic with Presto
The Color Classic uses a 16 MHz 68030 CPU, but the Presto accelerator provides either a 25 MHz 68040 or a 68LC040 (a 68040 without a math section).
The 68040 is faster than the 68030 due to larger data caches (dual 4096 byte caches vs. dual 256 byte caches), runs internally at twice bus speed, and, in the full 68040, has math functions integrated into the CPU instead of on a separate 68882 math coprocessor.
The Sonnet Presto works in the Macintosh LC, LC II, Color Classic, and their Performa twins.
Remember that benchmarks are arbitrary. They measure certain types of performance that may or may not reflect the way you work.
This computer was also tested without the Sonnet Presto accelerator.
The system was first tested on 26 February 1999 under System 7.5.5 using the internal monitor in "thousands of colors" mode and with a 16 MHz 68882 math coprocessor installed. Results are relative to a Quadra 605, which rates 1.0. Numbers rounded off to two decimal places.
The first set of numbers compares performance at different cache settings without the accelerator.
cache video CPU graphics disk math 32KB 16-bit 0.25 0.23 0.86 1.94 64KB 16-bit 0.25 0.23 0.89 1.94 128KB 16-bit 0.25 0.23 0.90 1.92 256KB 16-bit 0.25 0.22 0.75 1.93
The second set of numbers shows performance with the 25 MHz Sonnet Presto accelerator using the 68LC040, which lacks the math coprocessor. The only other difference is that the addtional VRAM and the math coprocessor were removed, so these tests were run in 8-bit mode.
cache video CPU graphics disk math 32KB 8-bit 0.82 0.47 0.89 4.19 64KB 8-bit 0.82 0.47 0.88 4.19 128KB 8-bit 0.82 0.47 0.89 4.17 256KB 8-bit 0.82 0.47 0.85 4.18
Overall, CPU performance is almost 3.3 times faster, graphics performance is doubled, and, despite the handicap of no math coprocessor on the Presto, even math performance is more than doubled.
Because the CPU has very little to do with the hard drive, there is no significant change except at the 256 KB cache setting. At that setting, the Presto shows the same unexpected decline in disk performance, but to a lesser extent than with the original 68030 CPU.
Speedometer 4 was not tested at different video settings.
Go to the Color Classic profile.
Links for the Day
- Mac of the Day: PowerBook 5300, introduced 1995.08.25. The first PowerPC PowerBook - known for flaming performance.
- Support Low End Mac
- World Book Encyclopedia 2012 DVD, Tommy Thomas, Reviews, 2013.03.05. "You may be asking yourself, in an age of Wikipedia and instant information, is World Book still relevant?"
- Vintage Computer Festival SouthEast, April 20-21, 2013, Simon Royal, Mac Spectrum, 2013.02.25. Old Apple gear and old PCs.
- iMessage: The Ultimate Messaging Service?, Simon Royal, Mac Spectrum, 2013.02.21. In most ways, Apple's iMessage is far superior to BlackBerry Messenger.
- More links in our archive.
- Best Mac mini Deals
- Best 13" MacBook Pro Deals
- Best Intel iMac Deals
- Best iPod touch Deals
- Best iPhone Deals
- Best iPod nano Deals
- Best iPod classic Deals
- Best Apple TV Prices
- More deals in our archive.
Low End Mac Reader Specials
Cult of Mac
Shrine of Apple
The Mac Observer
Accelerate Your Mac
The Vintage Mac Museum
Mac Driver Museum
System 6 Heaven
System 7 Today
the pickle's Low-End Mac FAQ