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External SSDs

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Corsair EX400U 1TB vs Lexar SL100 Pro 2TB

Compare Corsair EX400U 1TB and Lexar SL100 Pro 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 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
Check on Amazon →

Lexar

Lexar SL100 Pro 2TB
7.6/10

The 2TB SL100 Pro keeps the same brushed-aluminum credit-card footprint of the 1TB — famously pocketable but only marginally faster on sustained writes thanks to the larger SLC cache.

2TB in credit-card footprint
950 MB/s read
Aluminum body
Check on Amazon →

Spec Comparison

Spec
Corsair EX400U 1TB
Lexar SL100 Pro 2TB
Read Speed
3.3 GB/s ✓
950 MB/s
Write Speed
3.0 GB/s ✓
950 MB/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 ✓
7.6/10
Total Wins
4 wins
2 wins

Frequently Asked Questions

Which is better, Corsair EX400U 1TB or Lexar SL100 Pro 2TB?
The Corsair EX400U 1TB scores 9.0/10 compared to 7.6/10 for the Lexar SL100 Pro 2TB. Our expert analysis favors the Corsair EX400U 1TB for its superior speed.
What's the difference between Corsair EX400U 1TB and Lexar SL100 Pro 2TB?
The key differences: The Corsair EX400U 1TB offers 3,300 MB/s reads vs 950 MB/s for the Lexar SL100 Pro 2TB. Capacity options differ: Corsair EX400U 1TB is 1TB while Lexar SL100 Pro 2TB is 2TB. The Corsair EX400U 1TB uses USB4 while the Lexar SL100 Pro 2TB uses USB 3.2 Gen 2.
Which is faster, Corsair EX400U 1TB or Lexar SL100 Pro 2TB?
The Corsair EX400U 1TB is faster with 3,300 MB/s read speeds compared to 950 MB/s for the Lexar SL100 Pro 2TB. That's a 247% speed advantage.
Which has better value, Corsair EX400U 1TB or Lexar SL100 Pro 2TB?
The Corsair EX400U 1TB scores higher (9.0 vs 7.6/10), indicating better overall value in our evaluation. Check both models on the retailer's site for the latest details.

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