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Addlink S20 1TB SATA III SSD 2.5 Inch Internal Solid State Drive 3D NAND with SLC Caching, Up to 500MB/s, HDD Replacement Upgrade for Laptop, Desktop PC, PS4 (ad1TBS20S3S)
Addlink

Addlink S20 1TB SATA III SSD 2.5 Inch Internal Solid State Drive 3D NAND with SLC Caching

Bottom line: The Addlink S20 1TB SATA III SSD 2.5 Inch Internal Solid State Drive 3D: Up to 500MB/s sequential reads and 450MB/s writes over SATA III 6Gb/s; main trade-off: SATA III caps speed near 500MB/s, far below NVMe M.2 drives.

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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.

Pros & Cons

Pros

  • ✓ Up to 500MB/s sequential reads and 450MB/s writes over SATA III 6Gb/s
  • ✓ SLC write caching keeps large file transfers responsive
  • ✓ Slim 7mm 2.5-inch form factor fits most laptop and desktop SATA bays
  • ✓ Direct internal drive swap for PS4, PS4 Slim and PS4 Pro
  • ✓ No moving parts: silent, shock-resistant, lower power draw than an HDD

Cons

  • ✗ SATA III caps speed near 500MB/s, far below NVMe M.2 drives
  • ✗ DRAM-less design; sustained writes rely on the SLC cache
  • ✗ Write speed (450MB/s) trails read speed (500MB/s)
  • ✗ No endurance (TBW) or warranty terms stated in the listing

Manufacturer description

The Addlink S20 1TB SATA III SSD is a straightforward way to retire a slow spinning hard drive. Sequential speeds of up to 500MB/s read and 450MB/s write over the SATA III 6Gb/s interface mean your system boots faster, applications open sooner, and game load screens get shorter. Built-in SLC write caching keeps the drive responsive during large file copies and heavier workloads, even though the S20 uses a DRAM-less design. That keeps the design lean while the cache absorbs bursts of incoming writes. The standard 2.5-inch, 7mm slim form factor drops into most laptops and desktop PCs with a…

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SpecPicks Verdict

SpecPicks scored Addlink S20 1TB SATA III SSD 2.5 Inch Internal Solid State Drive 3D… 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 1TB work as a PS4 internal drive replacement?

Yes. Addlink lists the S20 as a direct replacement for the internal hard drive in the PlayStation 4, PS4 Slim, and PS4 Pro, with shorter game loading and system boot times compared to the stock HDD.

Will this SSD fit in my laptop?

It uses the standard 2.5-inch, 7mm slim form factor with a SATA III connection, which fits most laptops and desktops that have a 2.5-inch SATA bay. It will not fit systems that only have M.2 slots.

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

It is rated for sequential reads up to 500MB/s and writes up to 450MB/s on SATA III 6Gb/s, much faster than a mechanical HDD. NVMe M.2 drives are faster, but they need an M.2 slot your system may not have.

Does the Addlink S20 have DRAM cache?

No. The S20 is a DRAM-less drive that uses built-in SLC write caching to keep performance responsive during large file transfers and heavier workloads.

What warranty and endurance rating does the Addlink S20 1TB have?

The product details provided do not state warranty length or a TBW endurance rating. Check the product listing or Addlink's website for current warranty terms for model ad1TBS20S3S.

Key Features

  • FASTER THAN ANY HARD DRIVE: Sequential read/write speeds up to 500/450MB/s on SATA III 6Gb/s deliver quicker boot-up, faster app launches, and shorter game load times 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
  • EASY DROP-IN UPGRADE: Standard 2.5-inch, 7mm slim form factor fits most laptops and desktop PCs - the simplest, most affordable way to revive an aging computer
  • PS4 COMPATIBLE: Works as a direct replacement for the PlayStation 4, PS4 Slim, and PS4 Pro internal hard drive to noticeably reduce game loading and system boot times
  • DURABLE 3D NAND DESIGN: No moving parts means shock and vibration resistance, silent operation, and lower power draw that helps extend laptop battery life

Full Specifications

BrandAddlink
ColorS20
Model NameAddlink S20
Read Speed560 megabytes_per_second
Form Factor2.5-inch
Media Speed500 megabytes_per_second
Model Numberad1TBS20S3S
CompatibilityPC, PS4
Built-In Media1 x SSD
PS4 COMPATIBLEWorks as a direct replacement for the PlayStation 4, PS4 Slim, and PS4 Pro internal hard drive to noticeably reduce game loading and system boot times
Hard-Drive Size1 TB
Mfr Part Numberad1TBS20S3S
Number of Items1
Special FeatureCompatible Intel/AMD Platforms
Vibration/RumbleYes
Hardware PlatformPC, laptop, playstation 4
Installation TypeInternal Hard Drive
Compatible DevicesLaptop
Data Transfer Rate560 megabits_per_second
Enclosure Material3D Nand Flash
Full listing titleAddlink S20 1TB SATA III SSD 2.5 Inch Internal Solid State Drive 3D NAND with SLC Caching, Up to 500MB/s, HDD Replacement Upgrade for Laptop, Desktop PC, PS4 (ad1TBS20S3S)

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Addlink S20 1TB SATA III SSD 2.5 Inch Internal Solid State Drive 3D NAND with SLC Caching, Up to 500MB/s, HDD Replacement Upgrade for Laptop, Desktop PC, PS4 (ad1TBS20S3S) 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.

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Addlink S20 1TB SATA III SSD 2.5 Inch Internal Solid State Drive 3D NAND with SLC Caching, Up to 500MB/s, HDD Replacement Upgrade for Laptop, Desktop PC, PS4 (ad1TBS20S3S)
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