Silicon Power Slim S55 240GB Solid State Drive Review

/ 7 years ago

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Final Thoughts


The Silicon Power Slim S55 can be a tricky drive to find, but it might be worth the search when we look at the benchmark results. Most vendors will have a different and older design of the drive shown, but you can identify it by the product code. At the time of writing, I found it listed for £68.41 for UK readers and starting from €78.99 in Germany. Amazon US has the drive listed for $63.35. Since writing this review, the drive’s availability got a lot better. For example, you can now get it at Aria PC too for just £59.99.



The Slim S55 is the little brother in the Slim series of 7mm thin Silicon Power solid state drives, but that doesn’t mean that it can’t show its teeth and perform great. It performed far better than I had expected with sequential read results all the way up to 556MB/s in ATTO and 530MB/s in CDM. The random performance was equally impressive with 92K IOPS reading and 89K IOPS writing during our IOmeter benchmarks.

The design is very simple: a two piece black casing with a sticker on the top. The colourful logo brightens it up a bit, but other than that it is just a plain and simple black drive. Feature wise it has the basics such as SMART, TRIM, and Garbage collection features, but it also comes with Error Correction Code and is RAID ready.

There is a capacity option for pretty much anyone. It starts out with small drives at 32GB and 64GB for basics setups where you don’t need much local capacity and continues over 120GB to the 240GB model that I tested today and ending in a 480GB model. The available upgrade kits make the switch from an old system extremely easy as they come with an external enclosure to be used during the upgrade as well as cloning software. Once you are done with the upgrade, you can use the enclosure for the old drive and use it as a portable one instead.


  • Phison S10 Controller
  • Great performance
  • Available as upgrade-pack
  • RAID ready, TRIM, ECC, SMART, NCQ, and Garbage Collection features
  • 32GB to 480GB capacity options


  • Availability

“Silicon Power’s Slim S55 SSD has a surprisingly great performance and did not let us down in any of our benchmarks.”


Silicon Power Slim S55 240GB Solid State Drive Review

Thank You Silicon Power for providing us with this sample.

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