Testing was done by PCWeek using a 19MB file.
Shorter bars equals faster performance.
The following Photoshop results are from the January issue of BYTE Magazine . The Bravo is a 300Mhz Pentium II based machine running Windows NT 4. Shorter bars indicate better performance. Below is a graph showing the performance of Windows based machines to their Mac counterpart when testing with Mathematica 3.0. The results should be taken as indication of how the OS performs relative to each other and not to the performance potential of the machine.