Silicon Power Slim S55 240GB Solid State Drive Review
Final Thoughts
Pricing
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.
Conclusion
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.
Pros
- Phison S10 Controller
- Great performance
- Available as upgrade-pack
- RAID ready, TRIM, ECC, SMART, NCQ, and Garbage Collection features
- 32GB to 480GB capacity options
Cons
- Availability
“Silicon Power’s Slim S55 SSD has a surprisingly great performance and did not let us down in any of our benchmarks.”

Thank You Silicon Power for providing us with this sample.
Now available in 960 GB size for $210. Low low price!
http://camelcamelcamel.com/Silicon-Power-960GB-Internal-SP960GBSS3S55S25/product/B019WARLMI?context=browse
Got the 960 GB size from amazon.de for 94.97 Euro~
https://www.amazon.de/Silicon-Power-interne-Zoll-schwarz/dp/B01M8HIP6G/
I was just looking at Amazon price trackers. The price of SSDs are all half what they were a year ago! At this rate, it will be 50 Euro at this time next year.
WOW how
was there a sale?
It was on sale.
Hello i know is almost 2 year now but the price whent crazy in half a year … the 960gb is 5 times more than what Richard stated from 97EU to +500$dollars i wonder what happened to rize that much , (a friend of mine told me is because of miners(bitcoin) and because of them gpu and outer PC components doubled or more in last year.I was wonder what is your response to these price rize. Thanks for the rewiew by the way! (i whanted to buy 240GB version since is the cheapest here for the 240 range (80dollars).
Thanks for your time, have a nice day reader!
Not sure what you mean. Currently, you can get an S55 240GB for $68 at NewEgg, only slightly more than the $64 it was at the time of review.
Hi sry i writed late at night and maybe i did not get it too well.
I whanted to say for this reply:
twoElectric says:
March 12, 2016 at 1:25 am
Now available in 960 GB size for $210. Low low price!
http://camelcamelcamel.com/Silicon-Power-960GB-Internal-SP960GBSS3S55S25/product/B019WARLMI?context=browse
That link send you a site that 960GB is NOT 210$ is 5times more and was wonder why rised that much and for 240GB was reffering that 80$(now94$) is the cheapest on my country and i can’t buy from NewEgg becauze they not shipping to my country 🙁
And Thank you verry much for reply!
Hi again
I’m guessing the model is being phased out and it’s probably just a few shops who have stock left. If you’re in the market for a 960GB/1TB SSD, there are other options out there tho, around that price area (230ish euro here). https://geizhals.de/?cat=hdssd&xf=2028_1000~252_960~4836_2
I do get why you’d want the S55 tho, especially in the first revision that I reviewed. It delivers amazingly for the price.
Hello (again) i whanted to Thank you, after i whent to your site recomandation i was able to find an Crucial that i like but not before reading your rewiew for https://www.eteknix.com/crucial-mx500-1tb-2-5-inch-solid-state-drive-review/10/ whanted to thank you for that rewiew also(this site now become my 1st place for ssd rewiew 🙂
Thanks for reading and have a nice day!
Glad I could help!