All Macs In-Depth Tests
Performance Boost From Using Speed Doubler 1.X

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The graphs below represent a performance comparison between a 6300 Performa with a 512K Disk Cache setting and the same machine with Speed Doubler installed. Testing was done using MacBench 3.0. MacBench profiles popular software programs such as Adobe Photoshop, Word 6.0 and QuarkXpress among a variety of others and applies these profiles to the various subsystems being tested. See this description of what MacBench tests and how. It appears that Speed Doubler overall gives a modest boost to performance however in accessing and writing small packets of data ( up to 1K) from the hard drive it has a dramatic effect. Speed Doubler also greatly increases performance in emulation mode. Longer bars equals faster performance.

Speed Doubler Overall Comparison

Comparison Graph



CD ROM Mix Comparison Graph


Sequential Read Test

SR Graph


Random Write Test

RW Graph


Emulation Test

Graph below shows the performance increase in Emulation Mode when using Speed Doubler. Testing was done with Speedometer 4.0 on a Performa 6300. First results (601/Emulation) are standard test settings (601 is a typo and does not refer to the processor) and second set of results are with Speed Doubler.


RamDoubler + SpeedDoubler - performance when using RamDoubler and SpeedDoubler together. Also performance comparison between using RamDoubler and SpeedDoubler or using Virtual Memory and SpeedDouber.

SpeedDoubler and Disk Cache - performance at various Disk Cache settings. Disk Cache setting greatly effects SpeedDoubler performance