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Portable SSDs

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Corsair EX400U Portable 1TB vs Seagate One Touch SSD Portable 2TB

Compare Corsair EX400U Portable 1TB and Seagate One Touch SSD Portable 2TB side by side. Both are 1TB USB4 external SSDs, but they differ in speed, design, and value. Here's how they stack up.

Our Pick

Corsair

Corsair EX400U Portable 1TB
9.0/10

A USB4 portable from Corsair with 3300 MB/s read on Thunderbolt 4 / USB4 hosts - and the full 5-year warranty. The EX400U 1TB portable is a competitive USB4 entry point for video editors who need Thunderbolt-class speeds without the LaCie price tag.

USB4 3300 MB/s read
5-year warranty
Full 40Gbps USB4 link
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Seagate

Seagate One Touch SSD Portable 2TB
7.8/10

The 2TB One Touch is the realistic minimum for game-library cold storage and Time Machine backups at typical Seagate sale pricing. The larger die stack holds the rated 1030 MB/s write distinctly longer than the 1TB variant before SLC cache exhausts.

1030 MB/s rated
Both cables
Rescue data recovery plan
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Spec Comparison

Spec
Corsair EX400U Portable 1TB
Seagate One Touch SSD Portable 2TB
Read Speed
3.3 GB/s ✓
1.0 GB/s
Write Speed
3.0 GB/s ✓
1.0 GB/s
Capacity
1 TB
2 TB ✓
Interface
USB4
USB 3.2 Gen 2
Endurance (TBW)
600 TB
1,200 TB ✓
Warranty
5 Years ✓
3 Years
Score
9.0/10 ✓
7.8/10
Total Wins
4 wins
2 wins

Frequently Asked Questions

Which is better, Corsair EX400U Portable 1TB or Seagate One Touch SSD Portable 2TB?
The Corsair EX400U Portable 1TB scores 9.0/10 compared to 7.8/10 for the Seagate One Touch SSD Portable 2TB. Our expert analysis favors the Corsair EX400U Portable 1TB for its superior speed.
What's the difference between Corsair EX400U Portable 1TB and Seagate One Touch SSD Portable 2TB?
The key differences: The Corsair EX400U Portable 1TB offers 3,300 MB/s reads vs 1,030 MB/s for the Seagate One Touch SSD Portable 2TB. Capacity options differ: Corsair EX400U Portable 1TB is 1TB while Seagate One Touch SSD Portable 2TB is 2TB. The Corsair EX400U Portable 1TB uses USB4 while the Seagate One Touch SSD Portable 2TB uses USB 3.2 Gen 2.
Which is faster, Corsair EX400U Portable 1TB or Seagate One Touch SSD Portable 2TB?
The Corsair EX400U Portable 1TB is faster with 3,300 MB/s read speeds compared to 1,030 MB/s for the Seagate One Touch SSD Portable 2TB. That's a 220% speed advantage.
Which has better value, Corsair EX400U Portable 1TB or Seagate One Touch SSD Portable 2TB?
The Corsair EX400U Portable 1TB scores higher (9.0 vs 7.8/10), indicating better overall value in our evaluation. Check both models on the retailer's site for the latest details.

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