Corsair

Corsair EX300U

Ranked #10 in External SSDs

428 LP on the category ladder what's LP?

Announced October 2025 by Corsair

The consensus 10Gbps all-rounder, positively reviewed by both PCWorld and KitGuru. The sensible mainstream buy.

Consolidated from 13 cited sources across 10 outlets

Where the cited sources landed, as we read them

12 positive sources

See the sources

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Pros & cons

✓ Good performer for a 10Gbps SSD
✓ Pocket-sized and portable
✓ Up to 1,100 MB/s claimed sequential performance
✓ Well-reviewed across the specialist press for everyday use
✓ Compact 10 Gbps drive

✗ Outpaced by the Kingston XS1000 on value at the same performance tier

The sources behind this ranking

We searched the web and YouTube for what has been published about this product, then read the articles, video transcripts and comments we found.

Evidence 11 articles and 2 community sources

12 positive sources

PCWorld PCWorld · reviewer · Jul 2022

Price disparities aside, the EX300U is the fastest 10Gbps SSD I’ve tested to date, besting the Teamgroup X2 Max listed below by a small margin. And unlike the latter, you can stick it to a metal object like a PC case via the circular magnet on the back. Note that aluminum is not particularly magnetic, so this doesn’t work with most Macs.

Read P

PCWorld Jon Jacobi · reviewer · Nov 2021

Scant savings aside, the EX300U is the fastest 10Gbps SSD I’ve tested to date, besting the Teamgroup X2 Max listed below by a small margin. And unlike the latter, you can stick it to a metal object like a PC case via the circular magnet on the back. Note that aluminum is not particularly magnetic, so this doesn’t work with most Macs.

Read B

Basic Tutorials Article · Oct 2025

The CORSAIR EX400U SURVIVOR has everything that characterizes a high-performance mobile SSD: Thanks to USB4 technology, it achieves read speeds of up to 4,000 MB/s and write speeds of up to 3,600 MB/s. This makes it ideal for large video or data transfers in professional working environments.

Read T

Tom’s Hardware Charles Gouin-Peyrot · reviewer · Nov 2025

Les SSD portables ont pas mal de similitudes, cependant, le Corsair EX300U est assez unique en son genre et tente de se démarquer par des caractéristiques fort intéressantes. Compatibilité MagSafe, très bonnes performances et taille ultra compacte, il a tout pour plaire.

Read P

PCWorld Jon L. Jacobi · reviewer · Oct 2025

While a penny saved is a penny earned, I was honestly hoping that the EX300U would save you a few more given the reduced performance. Still, if you don’t have the faster port to take advantage of a USB 3.2×2 or USB4 SSD, you might as well save what you can.

Read T

TechPowerUp Article · Oct 2025

The compact EX300U delivers reliable, high‑speed portable storage in a pocket‑friendly design. Connect via USB 3.2 Gen 2 (Type‑C) for up to 1,100 MB/s reads and up to 1,100 MB/s writes, ideal for moving photos, editing video, and quick device backups.

Read P

Profesional Review José Antonio Castillo · reviewer · Oct 2025

Comenzamos este análisis estudiando el diseño del Corsair EX300U , el cual se presenta en un encapsulado cuadrado de 64 mm de lado y 12 mm de grosor , pesando tan solo 38 g, siendo perfecto para transportarlo y mantenerlo bajo un smartphone.

Read P

PC-WELT Jon L. Jacobi und Michael Söldner · reviewer · Nov 2025

Bei unseren realen 48-Gigabyte-übertragungen lag die EX300U in vielen Tests wieder an der Spitze. In anderen Disziplinen musste sie sich jedoch geschlagen geben.

Read I Instagram Instagram post

Meet the CORSAIR EX300U: Our newest MagSafe-compatible portable SSD perfect for mobile creatives, pros, and everyday users.

View post T Threads @corsair

Meet the CORSAIR EX300U: Our newest MagSafe-compatible portable SSD perfect for mobile creatives, pros, and everyday users.

View post K

KitGuru Article Read Y

Yahoo Tech Jeff Dunn · reviewer · May 2026

The best portable SSD for most people

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1 stance not read source

KitGuru Simon Crisp · reviewer · Oct 2025

Corsair's new EX300U is available in three capacities: 1TB, 2TB (the drive we are reviewing) and a flagship 4TB model. All three have the same Sequential read/write official ratings: up to 1,100MB/s.

Read