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External SSDs

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Corsair EX400U USB4 vs Crucial X8 1TB

Compare Corsair EX400U USB4 and Crucial X8 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 →

Crucial

Crucial X8 1TB
8.3/10

The X8 is Crucial's older-gen premium aluminum portable — superseded in retail by the X9 Pro but often available steeply discounted. Same 1050/1000 MB/s speeds, same form factor, same aluminum body. A solid budget pick when sale-priced under the X9 Pro.

1050/1000 MB/s speeds
Anodized aluminum body
3-year warranty
Check on Amazon →

Spec Comparison

Spec
Corsair EX400U USB4
Crucial X8 1TB
Read Speed
4.0 GB/s ✓
1.1 GB/s
Write Speed
3.6 GB/s ✓
1.0 GB/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 ✓
8.3/10
Total Wins
6 wins
0 wins

Frequently Asked Questions

Which is better, Corsair EX400U USB4 or Crucial X8 1TB?
The Corsair EX400U USB4 scores 9.2/10 compared to 8.3/10 for the Crucial X8 1TB. Our expert analysis favors the Corsair EX400U USB4 for its superior speed.
What's the difference between Corsair EX400U USB4 and Crucial X8 1TB?
The key differences: The Corsair EX400U USB4 offers 4,000 MB/s reads vs 1,050 MB/s for the Crucial X8 1TB. Capacity options differ: Corsair EX400U USB4 is 1TB while Crucial X8 1TB is 1TB. The Corsair EX400U USB4 uses USB4 while the Crucial X8 1TB uses USB 3.2 Gen 2.
Which is faster, Corsair EX400U USB4 or Crucial X8 1TB?
The Corsair EX400U USB4 is faster with 4,000 MB/s read speeds compared to 1,050 MB/s for the Crucial X8 1TB. That's a 281% speed advantage.
Which has better value, Corsair EX400U USB4 or Crucial X8 1TB?
The Corsair EX400U USB4 scores higher (9.2 vs 8.3/10), indicating better overall value in our evaluation. Check both models on the retailer's site for the latest details.

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