Crucial

Crucial X8 4TB Portable SSD - Up to 1050MB/s - PC and Mac - USB 3.2 External Solid State Drive - CT4000X8SSD9

Status: Crucial X8 4TB Portable SSD - Up to 1050MB/s…: Unavailable on Amazon as of 2026-10-18 04:23 UTC. Closest in-stock match (same 4TB portable SSD): SSK Portable SSD 4TB External Solid State Drives, $469.99 on Amazon as of 2026-10-21 12:20 UTC (price may vary). eBay sellers may still list this model new or used.

View Current Price — $469.99 🛒 Search eBay for this model

Bottom line: The Crucial X8 4TB Portable SSD: Read speeds up to 1050MB/s over USB 3.2; main trade-off: only read speed is published - no rated write speed for sustained transfers.

Unavailable on Amazon as of 2026-10-18 04:23 UTC

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Currently unavailable on Amazon. Not the same product — 3 in-stock alternatives with matching specs:

Same 4TB portable SSD: SSK Portable SSD 4TB External Solid State Drives — $469.99 on Amazon as of 2026-10-21 12:20 UTC (price may vary).

View Current Price — $469.99

Same 4TB portable SSD: SANDISK 4TB Extreme Portable SSD — $749.00 on Amazon as of 2026-10-21 12:20 UTC (price may vary).

View Current Price — $749.00

Same 4TB portable SSD: Crucial X10 Pro 4TB Portable SSD — $643.36 on Amazon as of 2026-10-21 12:20 UTC (price may vary).

View Current Price — $643.36

Original listing (currently unavailable) → Compare to similar external storage

By Mike Perry, Founder & Editor-in-Chief · Listing data updated 2026-10-18

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. About the author →

Pros & Cons

Pros

✓ Read speeds up to 1050MB/s over USB 3.2
✓ 4TB in a pocketable shell - full Steam library or 4K project archive
✓ Ships with USB-C 3.1 Gen2 and USB-A connectors, no adapter needed
✓ Drop proof to 7.5 feet plus shock and vibration rated
✓ Anodized aluminum core doubles as a passive heat spreader

Cons

✗ Only read speed is published - no rated write speed for sustained transfers
✗ Console support listed for PS4 and Xbox One, not the current generation
✗ USB 3.2 caps it below Thunderbolt and USB4 external drives
✗ 4TB capacity carries a steep premium over 1TB and 2TB versions

Manufacturer description

The Crucial X8 4TB portable SSD moves data at read speeds up to 1050MB/s over USB 3.2, which turns a 4TB Steam library or a scratch disk full of 4K footage into something you can carry in a jacket pocket. Crucial ships it with both USB-C 3.1 Gen2 and USB-A connectors, so the same drive plugs into a Windows desktop, a Mac, an iPad Pro, a Chromebook, an Android phone, a Linux box, a PS4, or an Xbox One without a dongle hunt. The anodized aluminum core is not decorative: it doubles as a heat spreader and backs a drop rating of 7.5 feet, plus shock, vibration, and extreme-temperature tolerance…

SpecPicks Verdict

SpecPicks scored Crucial X8 4TB Portable SSD using a rating × review-volume × price-fit model applied to published specs and reviews across the external storage category. Crucial'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 Crucial X8 4TB?

Crucial rates it at read speeds up to 1050MB/s over USB 3.2. Write speed is not published in the product specs, so sustained large-file write performance will depend on your host port and file sizes.

Does the Crucial X8 work with both Mac and PC?

Yes. Crucial lists compatibility with Windows, Mac, iPad Pro, Chromebook, Android, Linux, PS4, and Xbox One. It includes both USB-C 3.1 Gen2 and USB-A connectors, so no separate adapter is required for older ports.

Is the Crucial X8 durable enough to travel with?

It is drop proof up to 7.5 feet and rated for shock, vibration, and extreme temperatures, built around an anodized aluminum core. That rating covers the drive itself, not data loss from an unsafe eject during a drop.

Can I use the Crucial X8 4TB with a PS5 or Xbox Series X?

Crucial's stated console compatibility covers PS4 and Xbox One. Current-generation consoles can generally use USB drives for storing and playing last-gen titles, but check the console maker's current external-storage requirements before buying.

Is the Crucial X8 4TB worth it compared to cheaper portable drives?

The NAND is backed by Micron, one of the largest flash manufacturers in the world, rather than mixed-grade flash. For warranty terms, check the current product listing.

Key Features

Incredible performance with read speeds up to 1050 MB/s
Works with Windows, Mac, iPad Pro, Chromebook, Android, Linux, PS4, and Xbox One with USB-C 3.1 Gen2 and USB-A connectors
Durable design featuring an anodized aluminum core, drop proof up to 7.5 feet, extreme-temperature, shock and vibration proof
Backed by Micron, one of the largest manufacturers of flash storage in the world

Full Specifications

UPC	649528919274
ASIN	B0B787PNL7
Brand	Crucial
Color	Black
Model Name	X8
Read Speed	1050 Megabytes Per Second
Unit Count	1.0 Count
Form Factor	Portable
Item Weight	0.1 Kilograms
Media Speed	1050 MB/s
Manufacturer	Crucial
Model Number	CT4000X8SSD9
Built-In Media	Crucial X8 Portable SSD, USB-C to USB-A (5Gb/s) adapter, USB-C to USB-C (10Gb/s) cable
Hard-Drive Size	4 TB
Number of Items	1
Special Feature	Portable
Installation Type	External Hard Drive
Compatible Devices	Gaming Console, Laptop, Smartphone, Tablet
Data Transfer Rate	10 Gigabits Per Second
Enclosure Material	Plastic

Ready to buy?

Amazon shows no buyable offer for Crucial X8 4TB Portable SSD - Up to 1050MB/s… at the last check. The closest in-stock match with the same 4TB portable SSD is SSK Portable SSD 4TB External Solid State Drives. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

View Current Price — $469.99