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External SSDs

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Crucial X9 Pro 1TB vs LaCie Rugged SSD Pro 4TB

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

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
Check on Amazon →
Our Pick

LaCie

LaCie Rugged SSD Pro 4TB
9.2/10

A 4TBThunderbolt 3 portable — uniquely huge for this speed tier. The Rugged SSD Pro 4TB fills a slot nothing else really does: 4TB of fast external storage that's actually rugged, not just claimed to be.

Thunderbolt 3 + 4TB
IP67 + 3m drop + 1-ton crush
5-year Rescue
Check on Amazon →

Spec Comparison

Spec
Crucial X9 Pro 1TB
LaCie Rugged SSD Pro 4TB
Read Speed
1.1 GB/s
2.7 GB/s ✓
Write Speed
950 MB/s
1.9 GB/s ✓
Capacity
1 TB
4 TB ✓
Interface
USB 3.2 Gen 2
Thunderbolt 3
Endurance (TBW)
600 TB
2,400 TB ✓
Warranty
5 Years
5 Years
Score
9.0/10
9.2/10 ✓
Total Wins
0 wins
5 wins

Frequently Asked Questions

Which is better, Crucial X9 Pro 1TB or LaCie Rugged SSD Pro 4TB?
The LaCie Rugged SSD Pro 4TB scores 9.2/10 compared to 9.0/10 for the Crucial X9 Pro 1TB. Our expert analysis favors the LaCie Rugged SSD Pro 4TB for its superior speed.
What's the difference between Crucial X9 Pro 1TB and LaCie Rugged SSD Pro 4TB?
The key differences: The Crucial X9 Pro 1TB offers 1,050 MB/s reads vs 2,700 MB/s for the LaCie Rugged SSD Pro 4TB. Capacity options differ: Crucial X9 Pro 1TB is 1TB while LaCie Rugged SSD Pro 4TB is 4TB. The Crucial X9 Pro 1TB uses USB 3.2 Gen 2 while the LaCie Rugged SSD Pro 4TB uses Thunderbolt 3.
Which is faster, Crucial X9 Pro 1TB or LaCie Rugged SSD Pro 4TB?
The LaCie Rugged SSD Pro 4TB is faster with 2,700 MB/s read speeds compared to 1,050 MB/s for the Crucial X9 Pro 1TB. That's a 157% speed advantage.
Which has better value, Crucial X9 Pro 1TB or LaCie Rugged SSD Pro 4TB?
The LaCie Rugged SSD Pro 4TB scores higher (9.2 vs 9.0/10), indicating better overall value in our evaluation. Check both models on the retailer's site for the latest details.

More Comparisons

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