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Rectangular 2.5 inch SATA SSD with black label and silver metal casing

Silicon Power

Silicon Power Ace A55 4TB 2.5" SATA internal SSD

SKU CH-7BRT-7M2E0

A 4 TB 2.5" SATA internal SSD with up to 500 MBps read and 450 MBps write speeds for faster boot and application loading

  • Total capacity2 TB
  • Sequential read speedUp to 500 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 4TB

  • High transfer speeds up to 500 MBps read and 450 MBps write
  • SLC cache technology boosts peak write performance and extends drive lifespan
  • 7 mm slim 2.5 inch form factor fits ultrabooks and notebooks
  • 3D NAND flash delivers reliable high-speed data transfers
  • Bad block management enhances data integrity and drive reliability

Ready for 4 TB upgrades

The Ace A55 is a 2.5 inch SATA internal SSD built with 3D NAND flash and SLC cache technology. It targets laptop and desktop owners who want a straightforward capacity increase without changing drive bays. The 7 mm height fits ultrabooks and standard notebooks alike.

SATA connector and slim profile

A standard SATA interface means the drive drops into any 2.5 inch bay or caddy with no adapter required. The 7 mm z-height clears thin chassis while the 50 g weight keeps portable systems light. Shock resistance rated at 1500 G and vibration tolerance at 20 G protect data during daily transport.

Cool and quiet operation

With no moving parts the SSD runs silently and produces minimal heat under normal workloads. Sequential reads reach 500 MBps and writes reach 450 MBps while drawing little power from the system. An MTBF of 1500000 hours reflects the endurance expected from the SLC cache design.

How it compares

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

Price $270.99
Pricier than about 65% of the 1,994 comparable items (median $180.49).
Total capacity 2 TB
Higher than about 70% of the 1,368 comparable items (median 1 TB).
Sequential read speed Up to 500 MB/s
Lower than about 90% of the 1,180 comparable items (median 2,400 MB/s).
Price per TB $135.50 per TB
Cheaper than about 65% of the 1,362 comparable items (median $165.50 per TB).

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Specifications

Product
Brand nameSilicon Power
Product lineAce A55
Model nameSU004TBSS3A55S25NE
Part numberSU004TBSS3A55S25NE
Total capacity2 TB
Product typeInternal Solid State Drive (SSD)
Intended useConsumer
Performance
Sequential read speedUp to 500 MB/s
Sequential write speedUp to 450 MB/s
Connectivity
Connection protocolSATA
Ports & slots
Interface typeSATA III
Size & build
Form factor2.5 in (6.35 cm)
Overall height100.0 in x 69.9 in x 7.0 in
Overall width100.0 in x 69.9 in x 7.0 in
Product depth100.0 in x 69.9 in x 7.0 in
Product weight50g
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

Does the SATA III interface on this Ace A55 4TB drive cap real-world throughput at 500 MBps read and 450 MBps write?

Yes. The SATA III link on this Ace A55 4TB SSD is rated for up to 500 MBps sequential read and up to 450 MBps sequential write, so those figures are the practical ceiling for sustained transfers.

Will the 7.0 mm height of this 2.5" Ace A55 4TB SSD fit my ultrabook or slim laptop bay?

The drive measures 7.0 mm thick in the standard 2.5" form factor, matching the slim 7 mm bay found in most ultrabooks and thin laptops.

When cloning my old drive to this Ace A55 4TB SSD, what step do people often miss that leaves the new drive unbootable?

After cloning, many forget to set the new SSD as the first boot device in the UEFI/BIOS, so the system keeps trying to start from the original drive.

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