Silicon Power Slim S55 SP240GBSS3S55S25 240 GB
 | Outdated Product $24.74 Placement: internal; Size (GB): 240; Form factor: 2.5"; Controller: Phison PS3108-S8; Write speed (MB/s): 370; Read speed (MB/s): 460; Manufacturer's warranty: 3 years; TRIM; |
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Always clarify the specifications and configuration of the product with the online store manager before purchasing.
Catalog Silicon Power 2025 - new arrivals, bestsellers, and the most relevant models Silicon Power.
Silicon Power Slim S55 SP240GBSS3S55S25 configurations
| Price for Silicon Power Slim S55 SP240GBSS3S55S25 | ||||
|---|---|---|---|---|
| Silicon Power Slim S55 SP120GBSS3S55S25 120 GB | from $15.86 | 2 offers | |
| Silicon Power Slim S55 SP480GBSS3S55S25 480 GB | from $32.08 | 1 offer | |
| Silicon Power Slim S55 SP960GBSS3S55S25 960 GB | from $60.22 | 1 offer | |
Historical excursion
Silicon Power Slim S55 is the most "veteran" and at the same time the most "mysterious" SSD on the market. Its first version went on sale back in 2014 and was built on the then popular SandForce SF-2281 controller. Then came variations with more advanced Phison S8 and S9 controllers, which learned to work equally quickly with compressible and incompressible data. Last year's versions were based on Phison S10 and Silicon Motion SM2246, which was caused by the transfer of S55 from MLC to TLC memory (previous controllers simply did not support it).
Thimblerig
Finally, the latest iteration of the 2018 Silicon Power Slim S55 has switched to 3D TLC memory (slightly faster than planar TLC) and three controllers at once: Silicon Motion SM2258, Phison S11, and Marvell 88NV1120. Their common characteristic is “bufferless”: each of them, of course, has a small cache, but they are not supplemented with an external RAM memory chip for the sake of economy. Linear speeds are also approximately the same: on average 460 and 370 MB/s for reading and writing.
The less you know, the better you sleep
But the mechanisms of SLC caching are significantly different. For example, the Silicon Motion SM2258 has an SLC cache of 30 percent of the drive's capacity (when the cache is full, the write speed drops to 100 MB/s). While the Phison S11 and Marvell 88NV1120 have a strictly fixed-size cache of 4 GB. Moreover, it is impossible to distinguish different versions of Silicon Power Slim S55 by appearance or marking - it turns out to be a kind of lottery. In justification, we can say that for the entire time it has been on the market, the S55 has been, is, and probably will be one of the most affordable SSDs, with a surprisingly low percentage of defects (apparently, Silicon Power has well-established quality control in production). And for the undemanding average buyer, there is basically no difference between the controllers.
