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External SSDs

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Corsair EX400U USB4 vs Crucial X9 Pro 2TB

Compare Corsair EX400U USB4 and Crucial X9 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 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 X9 Pro 2TB
9.1/10

The 2TB X9 Pro keeps the same sustained-write profile as the 1TB but with double the cache budget before throttle. A cost-effective workhorse drive for anyone editing directly off external storage.

Real TLC NAND
5-year warranty
Doubles sustained-write cache size
Check on Amazon →

Spec Comparison

Spec
Corsair EX400U USB4
Crucial X9 Pro 2TB
Read Speed
4.0 GB/s ✓
1.1 GB/s
Write Speed
3.6 GB/s ✓
950 MB/s
Capacity
1 TB
2 TB ✓
Interface
USB4
USB 3.2 Gen 2
Endurance (TBW)
700 TB
1,200 TB ✓
Warranty
5 Years
5 Years
Score
9.2/10 ✓
9.1/10
Total Wins
3 wins
2 wins

Frequently Asked Questions

Which is better, Corsair EX400U USB4 or Crucial X9 Pro 2TB?
The Corsair EX400U USB4 scores 9.2/10 compared to 9.1/10 for the Crucial X9 Pro 2TB. Our expert analysis favors the Corsair EX400U USB4 for its superior speed.
What's the difference between Corsair EX400U USB4 and Crucial X9 Pro 2TB?
The key differences: The Corsair EX400U USB4 offers 4,000 MB/s reads vs 1,050 MB/s for the Crucial X9 Pro 2TB. Capacity options differ: Corsair EX400U USB4 is 1TB while Crucial X9 Pro 2TB is 2TB. The Corsair EX400U USB4 uses USB4 while the Crucial X9 Pro 2TB uses USB 3.2 Gen 2.
Which is faster, Corsair EX400U USB4 or Crucial X9 Pro 2TB?
The Corsair EX400U USB4 is faster with 4,000 MB/s read speeds compared to 1,050 MB/s for the Crucial X9 Pro 2TB. That's a 281% speed advantage.
Which has better value, Corsair EX400U USB4 or Crucial X9 Pro 2TB?
The Corsair EX400U USB4 scores higher (9.2 vs 9.1/10), indicating better overall value in our evaluation. Check both models on the retailer's site for the latest details.

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