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The Matrox utility measures sustained throughput between the drive and the DigiSuite buffer. Single stream performance will not exceed 35MB/s on a DigiSuite due to its own limitations, so the key figure is the range "dual read" numbers: the first one indicating the lowest data rate Matrox registered, and second one - the highest. A compatible drive set should have the lowest figure higher than the highest achievable data rate. E.g. DigiSuite is theoretically capable of 21MB/s per stream (even if it's average "lossless" data rate is half that number), and that means that you would want a drive set with its lowest "dual read" number above 21MB/s. Remember that Matrox' tests do depend on the system they are done on.
DPS Perception's utility depends on Perception's unique built-in SCSI controller to analyse drives' sustained data rate across the surface of the drive.
This is one of the best "platform-independent" tests in the industry as it is totally host computer-independent. Please bear in mind, though, that this built-in controller is Fast SCSI-2 only and it tests anything under the 10MB/s ceiling, but not above.
The black lines in the test are transfer rates on reads, and the red lines show transfer rates on writes.
Images are courtesy of:
- Matrox Video Products
Group
- Digital Processing Systems
- Steve Sobodos
- Stephen Rosenthal
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