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Corsair EX100U 2TB vs Corsair EX400U USB4

Compare Corsair EX100U 2TB and Corsair EX400U USB4 side by side. Both are 2TB USB 3.2 Gen 2x2 external SSDs, but they differ in speed, design, and value. Here's how they stack up.

Corsair

Corsair EX100U 2TB
8.5/10

A 2TB Gen 2x2 portable SSD in the same aluminum-and-rubber body as the 1TB. Write speed drops slightly to 1800 MB/s on the 2TB variant — a real-world trade-off for the larger NAND die. Still above 2GB/s on long transfers as long as the host is Gen 2x2.

Gen 2x2 speeds
2TB capacity
Both cables in box
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Our Pick

Corsair

Corsair EX400U USB4
9.2/10

High-bandwidth USB4 external SSD delivering up to 4,000MB/s reads with MagSafe compatibility. Perfect for creative professionals with Thunderbolt 4 and USB4 laptops.

Blazing 4000MB/s read speeds over USB4
MagSafe magnetic attachment for iPhone
Full Thunderbolt 4 backward compatibility
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Spec Comparison

Spec
Corsair EX100U 2TB
Corsair EX400U USB4
Read Speed
2.0 GB/s
4.0 GB/s ✓
Write Speed
1.8 GB/s
3.6 GB/s ✓
Capacity
2 TB ✓
1 TB
Interface
USB 3.2 Gen 2x2
USB4
Endurance (TBW)
1,200 TB ✓
700 TB
Warranty
3 Years
5 Years ✓
Score
8.5/10
9.2/10 ✓
Total Wins
2 wins
4 wins

Frequently Asked Questions

Which is better, Corsair EX100U 2TB or Corsair EX400U USB4?
The Corsair EX400U USB4 scores 9.2/10 compared to 8.5/10 for the Corsair EX100U 2TB. Our expert analysis favors the Corsair EX400U USB4 for its superior speed.
What's the difference between Corsair EX100U 2TB and Corsair EX400U USB4?
The key differences: The Corsair EX100U 2TB offers 2,000 MB/s reads vs 4,000 MB/s for the Corsair EX400U USB4. Capacity options differ: Corsair EX100U 2TB is 2TB while Corsair EX400U USB4 is 1TB. The Corsair EX100U 2TB uses USB 3.2 Gen 2x2 while the Corsair EX400U USB4 uses USB4.
Which is faster, Corsair EX100U 2TB or Corsair EX400U USB4?
The Corsair EX400U USB4 is faster with 4,000 MB/s read speeds compared to 2,000 MB/s for the Corsair EX100U 2TB. That's a 100% speed advantage.
Which has better value, Corsair EX100U 2TB or Corsair EX400U USB4?
The Corsair EX400U USB4 scores higher (9.2 vs 8.5/10), indicating better overall value in our evaluation. Check both models on the retailer's site for the latest details.

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