SP Silicon Power

SP 512GB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5" 7mm (0.28") Internal Solid State Drive (SP512GBSS3A55S25)

Name: SP 512GB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5" 7mm (0.28") Internal Solid State Drive (SP512GBSS3A55S25)
Brand: SP Silicon Power
SKU: B07997QV4Z
Price: 82.97 USD
Availability: InStock

By Mike Perry, Hardware Editor · Verified 2026-09-15

Mike Perry has researched PC hardware since 2014, tracking 80+ GPU generations, 50+ retro handheld platforms, and 30+ vintage PC configurations. He synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides. View full credentials →

$82.97

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View Current Price on Amazon → Compare to similar ssds & storage

*Price sourced from Amazon.com. Last updated 2026-08-17. Price and availability subject to change.

Bottom line: The SP 512GB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5" 7mm (0.28") Internal Solid State Drive (SP512GBSS3A55S25) is a specs-and-price decision rather than a crowd-consensus one in the ssds & storage category, priced around $82.97. Check the specification table above against one or two close alternatives — on price and spec fit, not on star ratings.

This 512GB SATA III drive from SP Silicon Power targets the most common storage upgrade there is: replacing a mechanical hard drive in an aging laptop or desktop without touching the rest of the build. The A55 uses 3D NAND flash with an SLC cache layer, which absorbs bursty writes so file copies and application launches finish faster than they would on the same NAND running unbuffered. Boot times and general system responsiveness see the clearest gain when you move off a spinning disk. The 2.5-inch chassis measures 7mm (0.28") thick, so it drops into Ultrabooks and ultra-slim notebooks that…

SpecPicks Verdict

SpecPicks scored SP 512GB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5"… using a rating × review-volume × price-fit model applied to our editorial and benchmark analysis across the ssds & storage category. SP Silicon Power's ssds & storage lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for ssds & storage of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the Amazon listing before purchase. Prices, stock, and Prime eligibility update directly from Amazon's catalog and may have moved since this page was last verified.

Frequently Asked Questions

Will this SSD fit my ultrabook?

It uses the 2.5-inch form factor at 7mm (0.28") thick, which SP specifies as suitable for Ultrabooks and ultra-slim notebooks. Confirm your machine has a 2.5-inch SATA bay rather than only an M.2 slot.

Is this faster than an NVMe drive?

No. This is a SATA III drive, and SATA III has a lower ceiling than the PCIe interface NVMe drives use. Against a mechanical hard drive, though, the difference in bootup and system responsiveness is substantial.

What does the SLC cache actually do?

The A55 pairs 3D NAND with an SLC cache layer. SP states this delivers a performance boost and longer lifespan, since the cache handles incoming writes quickly instead of committing every one straight to the main NAND.

What warranty comes with it?

A 3-year limited warranty. SP asks that you register the drive on the SP official website to receive complete manufacturer warranty service and product support, so do that after installation.

Can I use it in a RAID array?

Yes. SP lists RAID support alongside TRIM, garbage collection, and ECC error checking and correction, so the drive is specified for array use rather than standalone boot duty only.

Pros & Cons

Pros

✓ 3D NAND flash are applied to deliver high transfer speeds
✓ Backed by SP Silicon Power's warranty and support channels
✓ Ships via Amazon with Prime eligibility and the standard returns policy

Cons

✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
✗ Price, stock, and Prime eligibility update from Amazon and may have changed since this page was last verified

Key Features

3D NAND flash are applied to deliver high transfer speeds
Remarkable transfer speeds that enable faster bootup and improved overall system performance. The advanced SLC Cache Technology allows performance boost and longer lifespan
7mm slim design suitable for Ultrabooks and Ultra-slim notebooks.
Supports TRIM command, Garbage Collection technology, RAID, and ECC (Error Checking & Correction) to provide the optimized performance and enhanced reliability.
3-year limited warranty. (Please register your product via SP official website to get the complete manufacturer warranty services, product support and more.)

Full Specifications

UPC	886576045825 886576030449
ASIN	B07997QV4Z
Brand	SP Silicon Power
Color	512GB
Model Name	A55
Read Speed	500 Megabytes Per Second
Form Factor	2.5-inch
Item Weight	50 Grams
Manufacturer	Silicon Power imports
Model Number	SP512GBSS3A55S25
Built-In Media	1 x Silicon Power Ace A55 Solid State Drive
Item Type Name	Silicon Power 512GB SSD A55 SLC Cache Performance Boost SATA III 2.5" 7mm (0.28") Internal Solid State Drive
Hard-Drive Size	512 GB
Number of Items	1
Special Feature	SLC Cache Technology, TRIM Support, Garbage Collection, RAID Support
Installation Type	Internal Hard Drive
Compatible Devices	Laptop
Data Transfer Rate	6 Gigabits Per Second
Enclosure Material	3D Nand Flash
Additional Features	SLC Cache Technology, TRIM Support, Garbage Collection, RAID Support

Ready to buy?

SP 512GB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5" 7mm (0.28") Internal Solid State Drive (SP512GBSS3A55S25) is available on Amazon with Prime shipping and the full Amazon returns policy. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

View Current Price on Amazon →

*Price sourced from Amazon.com. Last updated 2026-08-17. Price and availability subject to change.