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Portable SSDs

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Corsair EX400U Portable 1TB vs Lexar SL660 Portable 1TB

Compare Corsair EX400U Portable 1TB and Lexar SL660 Portable 1TB 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
Check on Amazon →

Lexar

Lexar SL660 Portable 1TB
8.1/10

A 1TB Gen 2x2 portable with an aluminum body and an RGB-lit Logo -- the RGB is divisive but the performance is real. Build quality distinguishes the SL660 from cheaper Gen 2x2 peers like the Patriot Evlvr.

Gen 2x2 2000/2000 MB/s
Aluminum body
3-year warranty
Check on Amazon →

Spec Comparison

Spec
Corsair EX400U Portable 1TB
Lexar SL660 Portable 1TB
Read Speed
3.3 GB/s ✓
2.0 GB/s
Write Speed
3.0 GB/s ✓
2.0 GB/s
Capacity
1 TB
1 TB
Interface
USB4
USB 3.2 Gen 2x2
Endurance (TBW)
600 TB
600 TB
Warranty
5 Years ✓
3 Years
Score
9.0/10 ✓
8.1/10
Total Wins
4 wins
0 wins

Frequently Asked Questions

Which is better, Corsair EX400U Portable 1TB or Lexar SL660 Portable 1TB?
The Corsair EX400U Portable 1TB scores 9.0/10 compared to 8.1/10 for the Lexar SL660 Portable 1TB. Our expert analysis favors the Corsair EX400U Portable 1TB for its superior speed.
What's the difference between Corsair EX400U Portable 1TB and Lexar SL660 Portable 1TB?
The key differences: The Corsair EX400U Portable 1TB offers 3,300 MB/s reads vs 2,000 MB/s for the Lexar SL660 Portable 1TB. Capacity options differ: Corsair EX400U Portable 1TB is 1TB while Lexar SL660 Portable 1TB is 1TB. The Corsair EX400U Portable 1TB uses USB4 while the Lexar SL660 Portable 1TB uses USB 3.2 Gen 2x2.
Which is faster, Corsair EX400U Portable 1TB or Lexar SL660 Portable 1TB?
The Corsair EX400U Portable 1TB is faster with 3,300 MB/s read speeds compared to 2,000 MB/s for the Lexar SL660 Portable 1TB. That's a 65% speed advantage.
Which has better value, Corsair EX400U Portable 1TB or Lexar SL660 Portable 1TB?
The Corsair EX400U Portable 1TB scores higher (9.0 vs 8.1/10), indicating better overall value in our evaluation. Check both models on the retailer's site for the latest details.

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