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A thin silver 2.5 inch SSD with a smooth metal casing

Silicon Power

Silicon Power Slim S55 2.5" 960GB SATA III Internal SSD SP960GBSS3S55S25

SKU CH-B9E8-9XC9D MPN SP960GBSS3S55S25

A 2.5-inch SATA internal SSD with 960GB capacity and TLC memory, delivering up to 510 MBps read and 450 MBps write speeds for faster boot and load times

  • Total capacity960 GB
  • Sequential read speedUp to 510 MB/s
  • Sequential write speedUp to 450 MB/s
  • Interface typeSATA III
  • Form factor2.5 in (6.35 cm)
  • Product typeInternal Solid State Drive (SSD)

Capacity 960GB

  • Up to 510 MBps read speeds for fast boot times
  • Up to 450 MBps write speeds for quick file saves
  • 960GB capacity stores large media libraries
  • 5-inch 7mm form factor fits most laptops
  • 1500G shock resistance protects data from drops

960GB SATA III Internal SSD for System Upgrade

The Silicon Power Slim S55 is a 2.5 inch internal solid state drive with 960GB capacity. It connects via SATA III and uses TLC memory components. The drive targets consumers who want faster boot times and application loading compared to a mechanical hard drive.

Easy 2.5 Inch Installation With SATA Cables

Fitting the drive requires a standard 2.5 inch bay or bracket and two SATA cables for data and power. The 7mm height suits most laptop and desktop cages. Common issues include forgetting to initialise the disk in the operating system or using an older SATA II port that limits throughput.

Check SATA Port Availability And OS Support

Verify that your motherboard or laptop has a free SATA III 6Gbps port and a spare power connector from the power supply. Ensure the operating system supports AHCI mode for best performance. Confirm the physical bay can accept a 7mm high drive before ordering.

How it compares

Measured against everything we stock in Internal NVMe & SATA SSDs, at today’s prices. Recalculated every night.

Price $327.99
Pricier than about 71% of the 1,994 comparable items (median $180.49).
Total capacity 960 GB
Typical for this category: the median of 1,368 items is 1 TB.
Sequential read speed Up to 510 MB/s
Lower than about 90% of the 1,180 comparable items (median 2,400 MB/s).
Price per TB $341.66 per TB
Pricier than about 80% of the 1,362 comparable items (median $165.50 per TB).

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Specifications

Product
Brand nameSilicon Power
Product lineSlim S55
Model nameSP960GBSS3S55S25
Total capacity960 GB
Product typeInternal Solid State Drive (SSD)
Intended useConsumer
Performance
Sequential read speedUp to 510 MB/s
Sequential write speedUp to 450 MB/s
Storage
NAND flash typeTLC
Ports & slots
Interface typeSATA III
Size & build
Form factor2.5 in (6.35 cm)
Overall height7 mm
Overall width69.85 mm
Product depth100 mm
Product weight2.78 oz
Shipping weight0.08 kg
Package size171 × 105 × 14 mm
Environment & compliance
Max shock tolerance1500G
Vibration tolerance20G

Other versions of this model

2 more in the same range

Questions about this item

How can I verify the drive is delivering the quoted 510 MB/s read and 450 MB/s write speeds after installation?

Run a benchmark tool such as CrystalDiskMark or AS SSD on the SATA III port and confirm sequential results reach the stated 510 MB/s read and 450 MB/s write figures.

What ships with the SP960GBSS3S55S25 and what must I supply myself?

The package contains the 960 GB 2.5-inch SATA III SSD only; you must provide a SATA data cable, a SATA power connection and a 7 mm drive bay or bracket.

Which capacity version of the Slim S55 series should I choose for a primary OS and applications drive?

The 960 GB model gives ample room for the operating system, programs and frequent data while matching the 510 MB/s read and 450 MB/s write ratings of the series.

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