Skip to main content
External SSDs

As an Amazon Associate I earn from qualifying purchases. We may earn a commission from qualifying purchases made through links on this page. Prices and availability are subject to change. We are reader-supported and independent — our rankings are based on an objective scoring rubric, not sponsorship.

Corsair EX400U USB4 vs Lexar SL100 Pro 1TB

Compare Corsair EX400U USB4 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 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
Check on Amazon →

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
Check on Amazon →

Spec Comparison

Spec
Corsair EX400U USB4
Lexar SL100 Pro 1TB
Read Speed
4.0 GB/s ✓
950 MB/s
Write Speed
3.6 GB/s ✓
950 MB/s
Capacity
1 TB ✓
1 TB
Interface
USB4
USB 3.2 Gen 2
Endurance (TBW)
700 TB ✓
600 TB
Warranty
5 Years ✓
3 Years
Score
9.2/10 ✓
7.5/10
Total Wins
6 wins
0 wins

Frequently Asked Questions

Which is better, Corsair EX400U USB4 or Lexar SL100 Pro 1TB?
The Corsair EX400U USB4 scores 9.2/10 compared to 7.5/10 for the Lexar SL100 Pro 1TB. Our expert analysis favors the Corsair EX400U USB4 for its superior speed.
What's the difference between Corsair EX400U USB4 and Lexar SL100 Pro 1TB?
The key differences: The Corsair EX400U USB4 offers 4,000 MB/s reads vs 950 MB/s for the Lexar SL100 Pro 1TB. Capacity options differ: Corsair EX400U USB4 is 1TB while Lexar SL100 Pro 1TB is 1TB. The Corsair EX400U USB4 uses USB4 while the Lexar SL100 Pro 1TB uses USB 3.2 Gen 2.
Which is faster, Corsair EX400U USB4 or Lexar SL100 Pro 1TB?
The Corsair EX400U USB4 is faster with 4,000 MB/s read speeds compared to 950 MB/s for the Lexar SL100 Pro 1TB. That's a 321% speed advantage.
Which has better value, Corsair EX400U USB4 or Lexar SL100 Pro 1TB?
The Corsair EX400U USB4 scores higher (9.2 vs 7.5/10), indicating better overall value in our evaluation. Check both models on the retailer's site for the latest details.

More Comparisons

Corsair EX400U USB4 vs Samsung T9 2TB → Lexar SL100 Pro 1TB vs Samsung T9 2TB →
Corsair EX400U USB4 vs Samsung T9 Portable SSD → Lexar SL100 Pro 1TB vs Samsung T9 Portable SSD →
Corsair EX400U USB4 vs Crucial X10 Pro 2TB → Lexar SL100 Pro 1TB vs Crucial X10 Pro 2TB →
Corsair EX400U USB4 vs Samsung T7 4TB → Lexar SL100 Pro 1TB vs Samsung T7 4TB →