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External SSDs

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Crucial X6 4TB vs Crucial X9 Pro 1TB — Which External SSD Is Faster & Better Value?

Compare Crucial X6 4TB and Crucial X9 Pro 1TB side by side. Both are 4TB USB 3.2 Gen 2 external SSDs, but they differ in speed, design, and value. Here's how they stack up.

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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Our Pick

Crucial

Crucial X9 Pro 1TB
9.0/10

A 1050 MB/s portable SSD for creators who need TLC NAND, hardware encryption, and a 5-year warranty at less than Extreme Pro prices. The X9 Pro is Crucial's premium Gen 2 line — it targets direct-edit workflows where sustained writes and write endurance matter more than headline speeds.

Real TLC NAND (not QLC)
5-year warranty
AES 256-bit hardware encryption
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Spec Comparison

Spec
Crucial X6 4TB
Crucial X9 Pro 1TB
Read Speed
800 MB/s
1.1 GB/s ✓
Write Speed
800 MB/s
950 MB/s ✓
Capacity
4 TB ✓
1 TB
Interface
USB 3.2 Gen 2
USB 3.2 Gen 2
Endurance (TBW)
2,400 TB ✓
600 TB
Warranty
3 Years
5 Years ✓
Score
8.2/10
9.0/10 ✓
Total Wins
2 wins
4 wins

Frequently Asked Questions

Which is better, Crucial X6 4TB or Crucial X9 Pro 1TB?
The Crucial X9 Pro 1TB scores 9.0/10 compared to 8.2/10 for the Crucial X6 4TB. Our expert analysis favors the Crucial X9 Pro 1TB for its superior speed.
What's the difference between Crucial X6 4TB and Crucial X9 Pro 1TB?
The key differences: The Crucial X6 4TB offers 800 MB/s reads vs 1,050 MB/s for the Crucial X9 Pro 1TB. Capacity options differ: Crucial X6 4TB is 4TB while Crucial X9 Pro 1TB is 1TB. The Crucial X6 4TB uses USB 3.2 Gen 2 while the Crucial X9 Pro 1TB uses USB 3.2 Gen 2.
Which is faster, Crucial X6 4TB or Crucial X9 Pro 1TB?
The Crucial X9 Pro 1TB is faster with 1,050 MB/s read speeds compared to 800 MB/s for the Crucial X6 4TB. That's a 31% speed advantage.
Which has better value, Crucial X6 4TB or Crucial X9 Pro 1TB?
The Crucial X9 Pro 1TB scores higher (9.0 vs 8.2/10), indicating better overall value in our evaluation. Check both models on the retailer's site for the latest details.

More Comparisons

Crucial X6 4TB vs Samsung T9 2TB → Crucial X9 Pro 1TB vs Samsung T9 2TB →
Crucial X6 4TB vs Samsung T9 Portable SSD → Crucial X9 Pro 1TB vs Samsung T9 Portable SSD →
Crucial X6 4TB vs Crucial X10 Pro 2TB → Crucial X9 Pro 1TB vs Crucial X10 Pro 2TB →
Crucial X6 4TB vs Samsung T7 4TB → Crucial X9 Pro 1TB vs Samsung T7 4TB →