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Sandisk 4TB Extreme Portable SSD, Up to 1050MB/s Read Speeds (Old Model)
Sandisk

Sandisk 4TB Extreme Portable SSD, Up to 1050MB/s Read Speeds (Old Model)

Bottom line: The Sandisk 4TB Extreme Portable SSD ($749.90 on Amazon as of 2026-10-21 12:20 UTC): Up to 1050MB/s read, 1000MB/s write over USB 3.2 Gen 2; main trade-off: listed as the Old Model, so newer revisions may supersede it. Another in-stock pick with the same 4TB portable SSD: the SANDISK 4TB Extreme Portable SSD, $749.00 on Amazon as of (price may vary).

$749.90

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

Mike Perry — Hardware researcher since 2014. For external drives and portable storage, 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 2026-10-21. Price and availability subject to change.

Pros & Cons

Pros

  • ✓ Up to 1050MB/s read, 1000MB/s write over USB 3.2 Gen 2
  • ✓ Full 4TB capacity in a pocketable, carabiner-clipped shell
  • ✓ IP65 water and dust resistance, up from IP55 on the prior revision
  • ✓ 3-meter drop protection, a full meter better than the older model
  • ✓ 256-bit AES hardware encryption with password protection included

Cons

  • ✗ Listed as the Old Model, so newer revisions may supersede it
  • ✗ 1050MB/s ceiling is internal testing, not a guaranteed host-side result
  • ✗ Needs a USB 3.2 Gen 2 port to hit rated speeds; older USB throttles it
  • ✗ Memory Zone app adds a software layer some users would rather skip

Manufacturer description

Get NVMe solid state performance with up to 1050MB/s read and 1000MB/s write speeds in a portable, high-capacity drive(1) (Based on internal testing; performance may be lower depending on host device & other factors. 1MB=1,000,000 bytes.) Up to 3-meter drop protection and IP65 water and dust resistance mean this tough drive can take a beating(3) (Previously rated for 2-meter drop protection and IP55 rating. Now qualified for the higher, stated specs.) Use the handy carabiner loop to secure it to your belt loop or backpack for extra peace of mind.

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SpecPicks Verdict

SpecPicks scored Sandisk 4TB Extreme Portable SSD using a rating × review-volume × price-fit model applied to published specs and reviews across the external storage category. Sandisk's external 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 external 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

How fast is the SanDisk 4TB Extreme Portable SSD?

SanDisk rates it at up to 1050MB/s read and 1000MB/s write, based on internal testing. Real speeds depend on your host device and cable; you need a USB 3.2 Gen 2 port to approach the rated figures.

Is this drive waterproof and drop-proof?

It carries an IP65 water and dust resistance rating and up to 3-meter drop protection. That is an upgrade over the earlier revision of this drive, which was rated IP55 with 2-meter drop protection.

Does it encrypt my files?

Yes. Password protection with 256-bit AES hardware encryption is included, so the encryption runs on the drive rather than taxing your computer's CPU.

What does the Old Model label mean in the title?

It indicates this is a prior product revision rather than SanDisk's newest Extreme Portable release. The specs listed here, including the IP65 and 3-meter ratings and updated firmware, apply to this version.

Key Features

  • Get NVMe solid state performance with up to 1050MB/s read and 1000MB/s write speeds in a portable, high-capacity drive(1) (Based on internal testing; performance may be lower depending on host device & other factors. 1MB=1,000,000 bytes.)
  • Up to 3-meter drop protection and IP65 water and dust resistance mean this tough drive can take a beating(3) (Previously rated for 2-meter drop protection and IP55 rating. Now qualified for the higher, stated specs.)
  • Use the handy carabiner loop to secure it to your belt loop or backpack for extra peace of mind.
  • Help keep private content private with the included password protection featuring 256‐bit AES hardware encryption.(3)
  • Easily manage files and automatically free up space with the SanDisk Memory Zone app.(5)

Full Specifications

Size4TB
BrandSandisk
ColorMontery
ModelSDSSDE61-4T00-G25M
Warranty5-year limited manufacturer warranty
UnitCount1
ReleaseDate2023-05-22T00:00:01Z
ManufacturerSandisk Technologies, Inc.
ItemPartNumberSDSSDE61-4T00-G25M

Ready to buy?

Sandisk 4TB Extreme Portable SSD, Up to 1050MB/s Read Speeds (Old Model) 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 — $749.90

*Price sourced from Amazon.com. Last updated 2026-10-21. Price and availability subject to change.

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Sandisk 4TB Extreme Portable SSD, Up to 1050MB/s Read Speeds (Old Model)
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