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Corsair EX400U 1TB vs Lexar SL660 1TB

Compare Corsair EX400U 1TB and Lexar SL660 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 1TB

9.0/10

A 1TB USB4 portable — 3300 MB/s read on a Thunderbolt 4 / USB4 host. The EX400U is the rare USB4 drive that supports the full 40Gbps link (not all USB4 drives do). 5-year warranty is best-in-class for the speed tier.

USB4 3300 MB/s read

5-year warranty

Full 40Gbps USB4 link

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Lexar

Lexar SL660 1TB

8.1/10

A premium 2000 MB/s Gen 2x2 portable with an aluminum body and an RGB-lit Logo. The RGB is a divisive feature but the performance is real, and the build quality distinguishes it from cheaper Gen 2x2 peers like the Patriot Evlvr.

Gen 2x2 2000/2000 MB/s

Aluminum body

3-year warranty

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Spec Comparison

Spec

Corsair EX400U 1TB

Lexar SL660 1TB

Read Speed

3.3 GB/s ✓

2.0 GB/s

Write Speed

3.0 GB/s ✓

2.0 GB/s

Capacity

1 TB

Interface

USB4

USB 3.2 Gen 2x2

Endurance (TBW)

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 1TB or Lexar SL660 1TB?

The Corsair EX400U 1TB scores 9.0/10 compared to 8.1/10 for the Lexar SL660 1TB. Our expert analysis favors the Corsair EX400U 1TB for its superior speed.

What's the difference between Corsair EX400U 1TB and Lexar SL660 1TB?

The key differences: The Corsair EX400U 1TB offers 3,300 MB/s reads vs 2,000 MB/s for the Lexar SL660 1TB. Capacity options differ: Corsair EX400U 1TB is 1TB while Lexar SL660 1TB is 1TB. The Corsair EX400U 1TB uses USB4 while the Lexar SL660 1TB uses USB 3.2 Gen 2x2.

Which is faster, Corsair EX400U 1TB or Lexar SL660 1TB?

The Corsair EX400U 1TB is faster with 3,300 MB/s read speeds compared to 2,000 MB/s for the Lexar SL660 1TB. That's a 65% speed advantage.

Which has better value, Corsair EX400U 1TB or Lexar SL660 1TB?

The Corsair EX400U 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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