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A 2.5 inch 512GB SATA internal SSD with a 7mm slim black metal casing

Silicon Power

Silicon Power Ace A55 2.5" 512GB SATA Internal SSD SU512GBSS3A55S25NE

SKU CH-V15D-RJCTR MPN SU512GBSS3A55S25NE

A 2.5 inch 512 GB SATA solid-state drive with 3D NAND flash, sequential speeds up to 560 MB/s read and 530 MB/s write, 7 mm height and SLC caching for faster boot and longer life

  • Total capacity512 GB
  • Sequential read speedUp to 560 MB/s
  • Sequential write speedUp to 530 MB/s
  • Interface typeSATA III
  • Form factor2.5 in (6.35 cm)
  • Product typeInternal Solid State Drive (SSD)

Capacity 512GB

  • Faster boot and app loading with up to 560 MB/s read speed
  • Sustained write performance up to 530 MB/s via SLC Cache Technology
  • 3D NAND flash delivers higher endurance and reliability than planar NAND
  • 00 mm slim profile fits ultrabooks and standard 2.5" bays
  • Built-in ECC, TRIM and Garbage Collection protect data integrity over time

512 GB SATA SSD for everyday PCs

The Silicon Power Ace A55 is a 2.5 inch internal solid state drive built for consumer desktops and laptops. It uses 3D NAND flash and a SATA III interface to replace a mechanical hard drive with faster boot times and snappier application launches.

SATA III interface limits

The drive connects through the SATA III 6 Gbps interface, which caps real world throughput at the bus maximum. Sequential reads reach up to 560 MBps and writes up to 530 MBps, so the controller saturates the link before the flash becomes the bottleneck.

512 GB capacity with SLC cache headroom

At 512 GB the drive holds an operating system, core applications and a working set of files with room to spare. The on board SLC cache absorbs burst writes for everyday workloads, while sustained heavy writes will fall back to native 3D NAND speeds once the cache fills.

How it compares

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

Price $55.99
Cheaper than about 88% of the 1,994 comparable items (median $180.49).
Total capacity 512 GB
Lower than about 60% of the 1,368 comparable items (median 1 TB).
Sequential read speed Up to 560 MB/s
Lower than about 60% of the 1,180 comparable items (median 2,400 MB/s).
Price per TB $109.36 per TB
Cheaper than about 80% of the 1,362 comparable items (median $165.50 per TB).

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Specifications

Product
Brand nameSilicon Power
Product lineAce A55
Model nameSU512GBSS3A55S25NE
Total capacity512 GB
Product typeInternal Solid State Drive (SSD)
Intended useConsumer
Performance
Sequential read speedUp to 560 MB/s
Sequential write speedUp to 530 MB/s
Storage
NAND flash type3D NAND
Connectivity
Connection protocolSATA
Ports & slots
Interface typeSATA III
Size & build
Form factor2.5 in (6.35 cm)
Overall height7 mm
Shipping weight0.08 kg
Package size160 × 126 × 11 mm

Other versions of this model

5 more in the same range

Questions about this item

Should I choose the 128GB, 256GB or 512GB version of this drive?

The 512GB model gives the most room for operating system, applications and media. The 256GB and 128GB versions cost less but leave less free space for updates and caches.

What does the 560 MBps sequential read figure mean once the drive is installed?

It is the peak transfer rate the controller can reach on large, continuous files. Everyday tasks such as booting Windows or launching apps will feel faster, but sustained speeds depend on the system and file sizes.

The drive uses SATA III — what does that cap in practice?

SATA III limits the interface to 6 Gbps, so real-world throughput tops out around the rated 560 MBps read and 530 MBps write. The drive cannot exceed that ceiling regardless of the NAND technology inside.

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