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Silver 2.5 inch SATA SSD with black label, 7mm slim profile

Silicon Power

Silicon Power Ace A55 128GB 2.5" SATA internal SSD

SKU CH-N9GE-YF5E1

A 2.5-inch 128GB SATA internal SSD with 3D NAND, up to 460 MBps read and 360 MBps write, 7 mm slim for laptops

  • Total capacity128 GB
  • Sequential read speedUp to 460 MB/s
  • Sequential write speedUp to 360 MB/s
  • Interface typeSATA III
  • Form factor2.5 in (6.35 cm)
  • Product typeInternal Solid State Drive (SSD)

Capacity 128GB

  • Up to 460 MBps sequential read speeds for quick boot times
  • Up to 360 MBps sequential write speeds for faster file saves
  • 128 GB capacity with 3D NAND for reliable everyday storage
  • 5-inch 7 mm slim design fits ultrabooks and standard laptops
  • 1,500,000-hour MTBF and 1500G shock resistance for durable operation

128GB SATA SSD for everyday systems

The Silicon Power Ace A55 is a 2.5-inch internal solid-state drive built for consumer laptops and desktops. It uses 3D NAND flash with an SLC cache to accelerate read and write operations. The drive connects through a standard SATA interface and fits 7 mm bays.

7 mm slim profile suits ultrabooks and slim laptops

A lightweight 63 g chassis keeps the drive easy to install in tight spaces. The SATA connector ensures broad compatibility with existing drive bays and caddies. Solid-state construction provides 1500G shock resistance and 20G vibration resistance for daily transport. TRIM, garbage collection and ECC maintain data integrity over time.

Silent operation with low power draw

No moving parts mean completely noiseless performance and minimal latency. Sequential reads reach up to 460 MBps and writes up to 360 MBps under typical workloads. The drive is rated for 1,500,000 hours MTBF, reflecting its endurance for continuous use. S.M.A.R.T. monitoring lets users track health status at any time.

How it compares

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

Price $22.99
Cheaper than about 96% of the 1,994 comparable items (median $180.49).
Total capacity 128 GB
Lower than about 95% of the 1,368 comparable items (median 1 TB).
Sequential read speed Up to 460 MB/s
Lower than about 91% of the 1,180 comparable items (median 2,400 MB/s).
Price per TB $179.61 per TB
Pricier than about 54% of the 1,362 comparable items (median $165.50 per TB).

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Specifications

Product
Brand nameSilicon Power
Product lineAce A55
Part numberSU128GBSS3A55S25AH
Total capacity128 GB
Product typeInternal Solid State Drive (SSD)
Intended useConsumer
Performance
Sequential read speedUp to 460 MB/s
Sequential write speedUp to 360 MB/s
Storage
NAND flash type3D NAND
Ports & slots
Interface typeSATA III
ConnectionSATA
Size & build
Form factor2.5 in (6.35 cm)
Product weight63g
In the box
Included items1 x Silicon Power Ace A55 Solid State Drive
Environment & compliance
Max shock tolerance1500G
Vibration tolerance20G
More details
Mean time between failures1,500,000 h

Other versions of this model

5 more in the same range

Questions about this item

What real-world speed does the SATA III interface cap this drive at?

The SATA III 6Gb/s interface limits the Ace A55 to 460 MB/s sequential read and 360 MB/s sequential write in practice.

What clearance does the 7 mm 2.5-inch form factor need to fit?

The drive measures 7 mm (0.28 inch) thick and weighs 63 g, so it fits standard 2.5-inch bays and ultra-slim laptops that accept a 7 mm z-height.

How is the drive installed and which step is often missed?

Connect the SATA data and power cables, secure the 2.5-inch drive in the bay, then enable TRIM in the OS so garbage collection and the SLC cache work correctly.

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