Crucial

Crucial MX300 525GB SATA 2.5 Inch Internal Solid State Drive - CT525MX300SSD1

Name: Crucial MX300 525GB SATA 2.5 Inch Internal Solid State Drive - CT525MX300SSD1
Brand: Crucial
SKU: B01IAGSD5O

Bottom line: The Crucial MX300 525GB SATA 2.5 Inch Internal Solid State Drive: 525GB beats the common 480GB and 500GB tiers at the same class; main trade-off: SATA III caps sequential speed far below any NVMe M.2 drive.

Check price on Amazon

As an Amazon Associate, SpecPicks earns from qualifying purchases. Full disclosure →

Check price on Amazon → Compare to similar ssds & storage

By Mike Perry, Founder & Editor-in-Chief · Listing data updated 2026-10-06

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. About the author →

Pros & Cons

Pros

✓ 525GB beats the common 480GB and 500GB tiers at the same class
✓ 2.5-inch SATA fits older laptops and desktops with no M.2 slot
✓ Crucial is Micron's consumer brand, a first-party NAND maker
✓ Ships brand new in box with relevant accessories included

Cons

✗ SATA III caps sequential speed far below any NVMe M.2 drive
✗ Discontinued generation, so stock and pricing fluctuate
✗ 525GB fills fast if you install large modern game installs
✗ No M.2 or PCIe option in this SKU for newer motherboards

Manufacturer description

The Crucial MX300 525GB brings SATA solid-state storage to any desktop or laptop with a standard 2.5-inch drive bay, and it does so with the kind of track record most drives never accumulate. The 525GB capacity sits in the sweet spot for a boot drive plus a working library of applications and games, giving you room beyond a bare 480GB or 500GB tier without paying for a terabyte you may not fill. The 2.5-inch SATA form factor is the reason this drive still matters. It drops into older laptops, small form factor builds, and retro PC projects where M.2 slots simply do not exist, making it a…

SpecPicks Verdict

SpecPicks scored Crucial MX300 525GB SATA 2.5 Inch Internal Solid State Drive using a rating × review-volume × price-fit model applied to published specs and reviews across the ssds & storage category. Crucial'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 this SSD fit my laptop?

It uses the standard 2.5-inch SATA form factor, so it fits any laptop or desktop with a 2.5-inch drive bay and a SATA connection. Machines that only accept M.2 drives are not compatible.

Is 525GB enough storage for a boot drive?

525GB comfortably holds an operating system, productivity applications, and a moderate game or media library. If you install several large modern games at once, plan on a second drive.

Is the drive new or refurbished?

The listing states the product ships brand new in box with all relevant accessories. Confirm the seller and condition on the product page before ordering.

What warranty comes with the Crucial MX300?

Warranty terms are not listed in the product details here. Check the current Amazon listing and Crucial's support page for the warranty that applies to your unit.

Key Features

Brand New in box. The product ships with all relevant accessories

Full Specifications

Brand	Crucial
Hard Disk Size	525 GB
Special Feature	Portable
Installation Type	Internal Hard Drive
Compatible Devices	Desktop
Hard Disk Interface	Serial ATA
Hard Disk Description	Solid State Drive
Hard Disk Form Factor	2.5 Inches
Connectivity Technology	SATA
Digital Storage Capacity	525 GB

Ready to buy?

Crucial MX300 525GB SATA 2.5 Inch Internal Solid State Drive - CT525MX300SSD1 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.

Check price on Amazon →