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Black rectangular 2.5 inch SATA SSD with silver label, 7mm thin

Silicon Power

Silicon Power Slim S55 2.5" 480GB SATA Internal SSD SP480GBSS3S55S25

SKU CH-7QJA-W41XK MPN SP480GBSS3S55S25

A 2.5-inch SATA SSD with 480GB capacity, up to 520MB/s read and 480MB/s write speeds, and a 7mm slim profile for ultrabooks

  • Total capacity480 GB
  • Sequential read speedUp to 520 MB/s
  • Sequential write speedUp to 480 MB/s
  • Interface typeSATA III
  • Form factor2.5 in (6.35 cm)
  • Product typeInternal Solid State Drive (SSD)

Capacity 480GB

  • Faster boot and app loads with up to 520 MBps sequential read
  • Responsive multitasking from up to 43,000 IOPS random read
  • Fits ultra-thin laptops with 7mm slim 2.5" design
  • Survives drops and vibration with 1500G shock resistance
  • Efficient operation with TRIM and Garbage Collection support

Silicon Power Slim S55 480GB SATA SSD

The Silicon Power Slim S55 is a 2.5-inch internal solid-state drive with 480GB capacity. It uses TLC memory and a SATA III interface for consumer PCs and ultra-slim notebooks. The 7mm height fits Ultrabooks and standard drive bays alike.

SATA III 6Gbps interface limits and compatibility

The drive connects through the SATA III 6Gbps interface, which is backwards compatible with SATA II 3Gbps ports. Sequential reads reach up to 520 MBps and writes up to 480 MBps on this bus. Random 4KB performance peaks at 43,000 IOPS read and 24,000 IOPS write. TRIM, Garbage Collection, NCQ and RAID support are included.

7mm form factor decides fit

A 7.00mm z-height determines whether the Slim S55 fits a specific laptop or desktop bay. The drive measures 69.85mm wide by 100.00mm deep and weighs 2.78 oz. Shock resistance is rated at 1500G and vibration resistance at 20G.

How it compares

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

Price $86.99
Cheaper than about 76% of the 1,994 comparable items (median $180.49).
Total capacity 480 GB
Lower than about 71% of the 1,368 comparable items (median 1 TB).
Sequential read speed Up to 520 MB/s
Lower than about 90% of the 1,180 comparable items (median 2,400 MB/s).
Price per TB $181.23 per TB
Pricier than about 55% of the 1,362 comparable items (median $165.50 per TB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameSilicon Power
Product lineSlim S55
Model nameSP480GBSS3S55S25
Total capacity480 GB
Product typeInternal Solid State Drive (SSD)
Intended useConsumer
Performance
Sequential read speedUp to 520 MB/s
Sequential write speedUp to 480 MB/s
Random read (4K)Up to 43,000 IOPS
Random write (4K)Up to 24,000 IOPS
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 weight0.07 kg
Package size178 × 114 × 13 mm
Environment & compliance
Max shock tolerance1500G
Vibration tolerance20G

Other versions of this model

2 more in the same range

Questions about this item

Will the 7 mm height fit my ultrabook's 2.5" bay?

Yes, the drive measures exactly 7.00 mm tall, matching the standard slim 2.5" slot used in most ultrabooks and thin laptops.

Can I use this SSD with an older laptop that only has SATA II ports?

The SATA III interface is backwards compatible with SATA II 3 Gbps, so the drive will work though sequential speeds will be limited to the older bus.

What daily workload does the 43,000 random read IOPS figure translate to?

That level of 4 KB random read performance keeps operating system boot, application launch and multitasking snappy on typical office and web workloads.

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