SP Silicon Power

Silicon Power-256GB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5" 7mm (0.28") Internal Solid State Drive

Name: Silicon Power-256GB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5" 7mm (0.28") Internal Solid State Drive
Brand: SP Silicon Power
SKU: B075R4T536
Price: 49.99 USD
Availability: InStock

By SpecPicks Editorial · Verified 2026-08-26

$49.99

Buy on Amazon — $49.99 Compare to similar ssds & storage

*Price sourced from Amazon.com. Last updated 2026-08-26. Price and availability subject to change.

Bottom line: The Silicon Power-256GB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5" 7mm (0.28") Internal Solid State Drive is a niche pick — read recent reviews before buying in the ssds & storage category, priced around $49.99. Read recent reviews carefully before committing.

The Silicon Power A55 256GB is an entry-level SATA III internal SSD built on TLC 3D NAND with an SLC cache layer that absorbs bursts of writes so everyday file copies and application loads finish faster than the raw NAND alone would allow. Silicon Power rates it at up to 15x faster than a standard 5400 RPM hard drive over the SATA III 6Gb/s interface, which is the practical reason most buyers pick this drive: it is the cheapest way to make an aging laptop or desktop feel responsive again. The 2.5-inch, 7mm (0.28") form factor drops into the standard drive bay of nearly any notebook or…

SpecPicks Verdict

SpecPicks classifies Silicon Power-256GB SSD 3D NAND A55 SLC Cache Performance Boost SATA… as a niche pick — read recent reviews before buying in the ssds & storage category, based on our editorial and benchmark analysis and our ranking model that weights rating × review-volume × price-fit. SP Silicon Power's positioning sits within the broader category mid-tier. Use the Compare tool to put it side-by-side with two or three close alternatives before clicking through to Amazon.

Common buyer scenarios for ssds & storage of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the Amazon listing before purchase. Prices, stock, and Prime eligibility update directly from Amazon's catalog and may have moved since this page was last verified.

Pros & Cons

Pros

✓ 15 x faster than a standard 5400 hdd with sata iii 6gb/s interface
✓ Backed by SP Silicon Power's warranty and support channels
✓ Ships via Amazon with Prime eligibility and the standard returns policy

Cons

✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
✗ Price, stock, and Prime eligibility update from Amazon and may have changed since this page was last verified

Key Features

improving overall performance: tlc 3d nand flash and "slc cache technology" optimising the overall performance
15 x faster than a standard 5400 hdd with sata iii 6gb/s interface
low power consumption, shock and vibration-proof, noiseless and low latency

Full Specifications

Brand	SP Silicon Power
Color	Black
Model Name	A55
Read Speed	550 megabytes_per_second
Unit Count	1 Count
Form Factor	2.5-inch
Media Speed	420 Mb/s
Model Number	SP256GBSS3A55S25
Built-In Media	1
Hard-Drive Size	256 GB
Mfr Part Number	SP256GBSS3A55S25
Number of Items	1
Special Feature	Fan diameter: 8 cm, Maximum temperature: 0 - 70 °C
Vibration/Rumble	Yes

Ready to buy?

Silicon Power-256GB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5" 7mm (0.28") Internal Solid State Drive is available on Amazon with Prime shipping and the full Amazon returns policy. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

Check price on Amazon →

*Price sourced from Amazon.com. Last updated 2026-08-26. Price and availability subject to change.