ATTO Disk Benchmark

The ATTO disk benchmark tests the drives read and write speeds using gradually larger size files. For these tests, the ATTO program was set to run from its smallest to largest value (.5KB to 8192KB) and the total length was set to 256MB. The test program then spits out an extrapolated performance figure in megabytes per second.

USB 2.0

Please note: USB results were exactly the same for both enclosures. For ease of viewing only one set has been included.



Both enclosures posted some very impressive results. One thing that does stand out is that both enclosures' speed is being limited by the USB interface. None of the 4 modes showed much difference from each other when it came to speed and that tells me this Mediasonic enclosure's true potential will never be achieved over USB. However, 34MB a second is not bad performance at all and these are some of the higher numbers I have seen for USB enclosures. Overall very impressive performance for a less than $80 device, and very good performance for a $150 device.


FireWire 400



Now we are getting somewhere! Just as you should, you can now start to tell a difference between the various modes. Once again though, this enclosure’s true potential is being limited by the interface, and while 40MB/s is very good the speeds are still showing an artificial limit to them. They are still not showing what this enclosure can really...until the next test.


FireWire 800



Nearly 93MB a second for FireWire 800 is simply amazing. Once again one has to wonder if the 1394b interface standard is the limiting factor for the SU2FWB’s maximum speed. Let me just repeat that: 100 MB/s connection speed may not be fast enough to show this enclosures true potential. That is simply astonishing.