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Performance in SiSoftware Sandra Professional

We tested CompactFlash cards with the help of a Removable Storage/Flash Device Benchmark module. It allowed us to perform a number of file operations. We saved on the cards the files 512Bytes, 32KB, 256KB and 2MB big and then read them and deleted from the cards. The reading and writing performance is measured in number of operations per minute and a corresponding speed of KB/sec. Delete Performance was measured as a number of “killed” files per minute. The resulting integral value of the memory cards performance was based on the results of all operations and is called Combined Device Index. You can see the detailed performance results on the screenshots (click the links below). The tested CompactFlash cards on the graphs were marked with blue color. Here and later in our today’s roundup I will call the testing participants by their company names.

USB 2.0


The final results of the Removable Storage/Flash Devices Benchmark by SiSoftware Sandra Professional are summed up in the table below:

The results indicate pretty clearly that all flash cards work faster via USB 2.0 interface, because all final indexes are much higher in this case. However, if we take a closer look at the screenshots we will notice that it is not quite correct to compare the results for two different interfaces directly. The thing is that Combined Index for USB 2.0 is determined exactly as the developers suggest it, basing on the three types of operations. And for FireWire we do not use Delete Performance results. As a result, the final indexes do not actually correspond to the standard, so I think it would make much more sense to compare the results only within one interface.

With IEEE1394 the Transcend cards look best of all. Moreover, the 30x model appeared faster than 45x one. PQI and Digitex solutions run equally fast and the slowest performance results were demonstrated by the card from TwinMOS.

In case of USB 2.0 interface the situation hardly changes at all: the picture remains the same. Transcend 30x again appears the winner. The second prize is taken by the second Transcend card with 45x marking. Then the solutions from PQI and Digitex perform very close to one another and the last one to complete this test again appears the card from TwinMOS.

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