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Corsair EX400U USB4 vs Crucial X6 4TB

Compare Corsair EX400U USB4 and Crucial X6 4TB 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

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Crucial

Crucial X6 4TB

8.2/10

A 4TB external at the X6's price is closer to spinning-rust economics than to typical SSD pricing. The 800 MB/s cap doesn't matter when the use case is video archive or photo-library cold storage — this drive is bought for capacity first, speed second.

4TB at budget-friendly price

PS5/Xbox cold-library compatible

Cool-running

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Spec Comparison

Spec

Corsair EX400U USB4

Crucial X6 4TB

Read Speed

4.0 GB/s ✓

800 MB/s

Write Speed

3.6 GB/s ✓

800 MB/s

Capacity

1 TB

4 TB ✓

Interface

USB4

USB 3.2 Gen 2

Endurance (TBW)

700 TB

2,400 TB ✓

Warranty

5 Years ✓

3 Years

Score

9.2/10 ✓

8.2/10

Total Wins

4 wins

2 wins

Frequently Asked Questions

Which is better, Corsair EX400U USB4 or Crucial X6 4TB?

The Corsair EX400U USB4 scores 9.2/10 compared to 8.2/10 for the Crucial X6 4TB. Our expert analysis favors the Corsair EX400U USB4 for its superior speed.

What's the difference between Corsair EX400U USB4 and Crucial X6 4TB?

The key differences: The Corsair EX400U USB4 offers 4,000 MB/s reads vs 800 MB/s for the Crucial X6 4TB. Capacity options differ: Corsair EX400U USB4 is 1TB while Crucial X6 4TB is 4TB. The Corsair EX400U USB4 uses USB4 while the Crucial X6 4TB uses USB 3.2 Gen 2.

Which is faster, Corsair EX400U USB4 or Crucial X6 4TB?

The Corsair EX400U USB4 is faster with 4,000 MB/s read speeds compared to 800 MB/s for the Crucial X6 4TB. That's a 400% speed advantage.

Which has better value, Corsair EX400U USB4 or Crucial X6 4TB?

The Corsair EX400U USB4 scores higher (9.2 vs 8.2/10), indicating better overall value in our evaluation. Check both models on the retailer's site for the latest details.

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