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External SSDs

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Crucial X9 Pro 2TB vs LaCie Rugged SSD Pro 4TB

Compare Crucial X9 Pro 2TB and LaCie Rugged SSD Pro 4TB side by side. Both are 2TB 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 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 →
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 2TB
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
2 TB
4 TB ✓
Interface
USB 3.2 Gen 2
Thunderbolt 3
Endurance (TBW)
1,200 TB
2,400 TB ✓
Warranty
5 Years
5 Years
Score
9.1/10
9.2/10 ✓
Total Wins
0 wins
5 wins

Frequently Asked Questions

Which is better, Crucial X9 Pro 2TB or LaCie Rugged SSD Pro 4TB?
The LaCie Rugged SSD Pro 4TB scores 9.2/10 compared to 9.1/10 for the Crucial X9 Pro 2TB. Our expert analysis favors the LaCie Rugged SSD Pro 4TB for its superior speed.
What's the difference between Crucial X9 Pro 2TB and LaCie Rugged SSD Pro 4TB?
The key differences: The Crucial X9 Pro 2TB offers 1,050 MB/s reads vs 2,700 MB/s for the LaCie Rugged SSD Pro 4TB. Capacity options differ: Crucial X9 Pro 2TB is 2TB while LaCie Rugged SSD Pro 4TB is 4TB. The Crucial X9 Pro 2TB uses USB 3.2 Gen 2 while the LaCie Rugged SSD Pro 4TB uses Thunderbolt 3.
Which is faster, Crucial X9 Pro 2TB 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 2TB. That's a 157% speed advantage.
Which has better value, Crucial X9 Pro 2TB or LaCie Rugged SSD Pro 4TB?
The LaCie Rugged SSD Pro 4TB 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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Crucial X9 Pro 2TB vs Crucial X10 Pro 2TB → LaCie Rugged SSD Pro 4TB vs Crucial X10 Pro 2TB →
Crucial X9 Pro 2TB vs Samsung T7 4TB → LaCie Rugged SSD Pro 4TB vs Samsung T7 4TB →