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OCZ Enyo
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  • Enyo OCZSSDU3-1ENY128G Solid State Drive 128 GB - USB 3.0 - USB - External

morsch

September 2, 2010, 3:11 pm

Thanks for the review. With USB3, external drives are finally getting at least somewhat interesting as permanent addon drives. That said, wouldn't it make more sense to convert the results of your own benchmarks into MB/second? This'd make comparing real world speeds to the manufacturers claims and to the speeds measured by other people easier. 3.5 GB in 49s doesn't tell me a whole lot, while 70 MB/second tells me that it's very fast for a USB device, but fairly slow for an SSD.

TechVegan

September 2, 2010, 4:03 pm

@morsh:


To be fair, eSATA has been providing more than adequate specs for permanent external drives for years now...





As to the graphs, thanks for your suggestion but we avoided using MB/s precisely because with random usage like in the performed tests the figures are very unlikely to match the manufacturer's quoted speeds. This is because the type, amount and manner of data transmission (not to mention USB 3.0 controller, SSD firmware, motherboard, etc) can all have a


dramatic impact on file speed.





In Write, for example, the 1GB folder is easily convertible giving 40MB/s, while the 3.5GB single file almost doubles that at over 71MB/s. Neither of these speeds are close to the quoted maximums due to a combination of the above factors, one of the most significant of which is that the 'copy' also includes the writing to/reading from the test machine's moving-parts hard drive.

morsch

September 2, 2010, 9:12 pm

Point taken about the chipset and controller impacting the speed (oh and about eSATA), but write/read speeds to/from SSDs should really be tested from memory/ramdisk or at least a suitably fast internal SSD. Otherwise, you're really just testing the speed of the internal SATA drive, right? That said, I realize this isn't a hardcore storage testing site, so excessive testing might not be necessary.

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