SanDisk Extreme 510 Portable SSD Review: Rugged, External Storage

ATTO and AS-SSD Testing

ATTO is another "quick and dirty" type of disk benchmark that measures transfer speeds across a specific volume length. It measures raw transfer rates for both reads and writes and graphs them out in an easily interpreted chart. We chose .5kb through 8192kb transfer sizes and a queue depth of 6 over a total max volume length of 256MB. ATTO's workloads are sequential in nature and measure raw bandwidth, rather than I/O response time, access latency, etc.

ATTO Disk Benchmark
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Here again, we see a pretty smooth transition throughout the entire test as transfer sizes are increased, until we reach the peak throughput.  The Extreme 510 isn’t beating any of the internal drives in our tests -- which is to be expected, we simply include the data for a point of reference -- but clearly outpaces the USB thumb drive. It trailed the Samsung T3, however.

AS SSD Compression Benchmark
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Next up we ran the Compression Benchmark built-into AS SSD, an SSD specific benchmark being developed by Alex Intelligent Software. This test is interesting because it uses a mix of compressible and incompressible data and outputs both Read and Write throughput of the drive. We only graphed a small fraction of the data (1% compressible, 50% compressible, and 100% compressible), but the trend is representative of the benchmark’s complete results.


Again, the stable speed line you would expect from a modern solid state storage solution.  Nothing surprising found here.

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