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Corsair EX400U 1TB vs Lexar SL100 Pro 1TB

Compare Corsair EX400U 1TB and Lexar SL100 Pro 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 SL100 Pro 1TB

7.5/10

A 950 MB/s Gen 2 portable in a brushed-aluminum case the size of a credit card. The SL100 Pro is one of the smallest 1TB Gen 2 SSDs at retail — buy it for the form factor, not the rated speed (which undershoots the Gen 2 ceiling).

Brushed-aluminum case

950 MB/s read

Tiny credit-card footprint

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Spec Comparison

Spec

Corsair EX400U 1TB

Lexar SL100 Pro 1TB

Read Speed

3.3 GB/s ✓

950 MB/s

Write Speed

3.0 GB/s ✓

950 MB/s

Capacity

1 TB

Interface

USB4

USB 3.2 Gen 2

Endurance (TBW)

600 TB

Warranty

5 Years ✓

3 Years

Score

9.0/10 ✓

7.5/10

Total Wins

4 wins

0 wins

Frequently Asked Questions

Which is better, Corsair EX400U 1TB or Lexar SL100 Pro 1TB?

The Corsair EX400U 1TB scores 9.0/10 compared to 7.5/10 for the Lexar SL100 Pro 1TB. Our expert analysis favors the Corsair EX400U 1TB for its superior speed.

What's the difference between Corsair EX400U 1TB and Lexar SL100 Pro 1TB?

The key differences: The Corsair EX400U 1TB offers 3,300 MB/s reads vs 950 MB/s for the Lexar SL100 Pro 1TB. Capacity options differ: Corsair EX400U 1TB is 1TB while Lexar SL100 Pro 1TB is 1TB. The Corsair EX400U 1TB uses USB4 while the Lexar SL100 Pro 1TB uses USB 3.2 Gen 2.

Which is faster, Corsair EX400U 1TB or Lexar SL100 Pro 1TB?

The Corsair EX400U 1TB is faster with 3,300 MB/s read speeds compared to 950 MB/s for the Lexar SL100 Pro 1TB. That's a 247% speed advantage.

Which has better value, Corsair EX400U 1TB or Lexar SL100 Pro 1TB?

The Corsair EX400U 1TB scores higher (9.0 vs 7.5/10), indicating better overall value in our evaluation. Check both models on the retailer's site for the latest details.

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