The graphs below represent a performance comparison between using Virtual Memory at various setting. 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.
Longer bars equals faster performance.
The graph below represents a performance comparison between using RamDoubler and SpeedDoubler and using Virtual Memory and SpeedDoubler. Virtual Memory for this test was set to 34MB giving a total of 50MB of usable RAM space. Tests show only a very slight slow down in speed when using Virtual Memory and it is believed that even higher settings for Virtual Memory will not affect speed adversely.