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Addlink S20 512GB SSD 2.5 inch SATA III 6Gb/s 3D NAND with SLC Caching, Up to 500/450MB/s Internal Solid State Drive (ad512GBS20S3S)
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Addlink S20 512GB SSD 2.5 inch SATA III 6Gb/s 3D NAND with SLC Caching

Bottom line: The Addlink S20 512GB SSD 2.5 inch SATA III 6Gb/s 3D NAND with SLC Caching ($84.44 on Amazon as of 2026-10-07): Up to 500MB/s read and 450MB/s write, near the SATA III 6Gb/s ceiling; main trade-off: DRAM-less design; long sustained writes can slow once the SLC cache fills.

$84.44

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Buy on Amazon — $84.44 Compare to similar ssds & storage

By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014. For SSDs and PC storage upgrades, synthesises manufacturer specs and independent reviews rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference.

*Price sourced from Amazon.com. Last updated 2026-10-07. Price and availability subject to change.

Pros & Cons

Pros

  • ✓ Up to 500MB/s read and 450MB/s write, near the SATA III 6Gb/s ceiling
  • ✓ 7mm 2.5-inch drive fits PS4, PS4 Slim and PS4 Pro with no adapter
  • ✓ SLC write caching keeps large file transfers responsive
  • ✓ No moving parts: silent, shock-resistant and lower power than an HDD
  • ✓ Backed by an Addlink 3-year limited warranty

Cons

  • ✗ DRAM-less design; long sustained writes can slow once the SLC cache fills
  • ✗ SATA interface caps speed well below NVMe M.2 drives
  • ✗ 512GB fills quickly with modern game installs
  • ✗ Won't fit M.2-only laptops or mini PCs without a 2.5-inch bay

Manufacturer description

The Addlink S20 512GB SSD is a 2.5-inch SATA III drive for replacing a slow hard drive in a laptop, desktop or PlayStation 4. It reads sequentially at up to 500MB/s and writes at up to 450MB/s, close to the limit of the 6Gb/s SATA interface. Compared with a spinning HDD, Windows boots faster, applications open sooner and game load screens get shorter. The S20 uses 3D NAND flash with SLC write caching. A fast cache area absorbs incoming writes, which keeps the drive responsive during large file copies and heavier workloads even though it has no dedicated DRAM. It has no moving parts, so it…

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SpecPicks Verdict

SpecPicks scored Addlink S20 512GB SSD 2.5 inch SATA III 6Gb/s 3D NAND with SLC Caching using a rating × review-volume × price-fit model applied to published specs and reviews across the ssds & storage category. Addlink'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 retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Frequently Asked Questions

Will the Addlink S20 512GB fit in my PS4 or PS4 Pro?

Yes. It is a standard 2.5-inch, 7mm-slim SATA drive that fits the original PlayStation 4, PS4 Slim and PS4 Pro with no adapter. You will need to back up or clone your data and reinstall the system software.

How fast is the Addlink S20 compared to a hard drive?

It is rated for sequential speeds of up to 500MB/s read and 450MB/s write over SATA III 6Gb/s. Compared with a traditional HDD, that means faster Windows boot, quicker app launches and shorter game load times.

Does the Addlink S20 have a DRAM cache?

No. The S20 is a DRAM-less drive. It uses SLC write caching on its 3D NAND to stay responsive during large file transfers and heavier workloads.

What warranty comes with the Addlink S20 512GB SSD?

Addlink backs the S20 with a 3-year limited warranty plus technical support. Check Addlink's warranty page for the full terms and any endurance limits.

Can I use the Addlink S20 in a laptop that only has an M.2 slot?

Not directly. The S20 is a 2.5-inch SATA drive, so it needs a 2.5-inch drive bay with a SATA connection. It works in laptops and desktops with a standard 2.5-inch bay or 3.5-inch cage, but an M.2-only system needs an M.2 SSD instead.

Key Features

  • INSTANT SPEED BOOST: Upgrade from a hard drive to SSD speeds up to 500MB/s read and 450MB/s write — boot Windows in seconds, launch apps instantly, and load games faster compared to traditional HDDs
  • SLC CACHING FOR SUSTAINED SPEED: Built-in SLC write caching maintains responsive performance during large file transfers and heavy workloads without dedicated DRAM
  • PERFECT PS4 UPGRADE: Standard 2.5-inch, 7mm slim form factor drops right into PlayStation 4, PS4 Slim, and PS4 Pro — no adapters needed, just clone and play
  • DURABLE 3D NAND DESIGN: No moving parts means shock and vibration resistance, silent operation, and lower power draw that helps extend laptop battery life
  • WORRY-FREE SUPPORT: Built with quality 3D NAND flash and backed by addlink 3-year limited warranty and responsive technical support

Full Specifications

BrandAddlink
ColorS20
Model NameS20
Read Speed500 megabytes_per_second
Form Factor2.5-inch, Portable
Media Speed500 megabytes_per_second
Model Numberad512GBS20S3S
CompatibilityPS4
Built-In Media3-year limited warranty
Hard-Drive Size512 GB
Mfr Part Number43237-201064
Number of Items1
Special FeatureDurable, Portable, Shock Resistant
Vibration/RumbleYes
Hardware PlatformPC, laptop, playstation 4
Installation TypeInternal Hard Drive
Compatible DevicesLaptop
Data Transfer Rate560 megabytes_per_second
Enclosure Material3D NAND Flash Memory
WORRY-FREE SUPPORTBuilt with quality 3D NAND flash and backed by addlink 3-year limited warranty and responsive technical support
Full listing titleAddlink S20 512GB SSD 2.5 inch SATA III 6Gb/s 3D NAND with SLC Caching, Up to 500/450MB/s Internal Solid State Drive (ad512GBS20S3S)

Ready to buy?

Addlink S20 512GB SSD 2.5 inch SATA III 6Gb/s 3D NAND with SLC Caching, Up to 500/450MB/s Internal Solid State Drive (ad512GBS20S3S) is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

Buy on Amazon — $84.44

*Price sourced from Amazon.com. Last updated 2026-10-07. Price and availability subject to change.

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Addlink S20 512GB SSD 2.5 inch SATA III 6Gb/s 3D NAND with SLC Caching, Up to 500/450MB/s Internal Solid State Drive (ad512GBS20S3S)
$84.44
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