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Portable SSDs

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LaCie Rugged SSD Pro Portable 4TB vs Lexar SL660 Portable 2TB

Compare LaCie Rugged SSD Pro Portable 4TB and Lexar SL660 Portable 2TB side by side. Both are 4TB Thunderbolt 3 external SSDs, but they differ in speed, design, and value. Here's how they stack up.

Our Pick

LaCie

LaCie Rugged SSD Pro Portable 4TB
9.2/10

A 4TB Thunderbolt 3 portable in the iconic LaCie rugged orange body - one-of-one at this capacity/speed tier. Largely without competitor at 4TB Thunderbolt 3 + IP67 = niche product, premium pricing pairs the niche.

Thunderbolt 3 + 4TB + IP67
5-year Rescue
3-meter drop + 1-ton crush
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Lexar

Lexar SL660 Portable 2TB
8.2/10

The 2TB SL660 doubles SLC cache budget over the 1TB. RGB and aluminum body preserved -- a competitive Gen 2x2 2TB at moderate pricing, comparable with the Kingston XS2000 2TB and Patriot Evlvr 2TB.

Gen 2x2 2000 MB/s
2TB storage
Aluminum body
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Spec Comparison

Spec
LaCie Rugged SSD Pro Portable 4TB
Lexar SL660 Portable 2TB
Read Speed
2.7 GB/s ✓
2.0 GB/s
Write Speed
1.9 GB/s
2.0 GB/s ✓
Capacity
4 TB ✓
2 TB
Interface
Thunderbolt 3
USB 3.2 Gen 2x2
Endurance (TBW)
2,400 TB ✓
1,200 TB
Warranty
5 Years ✓
3 Years
Score
9.2/10 ✓
8.2/10
Total Wins
5 wins
1 win

Frequently Asked Questions

Which is better, LaCie Rugged SSD Pro Portable 4TB or Lexar SL660 Portable 2TB?
The LaCie Rugged SSD Pro Portable 4TB scores 9.2/10 compared to 8.2/10 for the Lexar SL660 Portable 2TB. Our expert analysis favors the LaCie Rugged SSD Pro Portable 4TB for its superior speed.
What's the difference between LaCie Rugged SSD Pro Portable 4TB and Lexar SL660 Portable 2TB?
The key differences: The LaCie Rugged SSD Pro Portable 4TB offers 2,700 MB/s reads vs 2,000 MB/s for the Lexar SL660 Portable 2TB. Capacity options differ: LaCie Rugged SSD Pro Portable 4TB is 4TB while Lexar SL660 Portable 2TB is 2TB. The LaCie Rugged SSD Pro Portable 4TB uses Thunderbolt 3 while the Lexar SL660 Portable 2TB uses USB 3.2 Gen 2x2.
Which is faster, LaCie Rugged SSD Pro Portable 4TB or Lexar SL660 Portable 2TB?
The LaCie Rugged SSD Pro Portable 4TB is faster with 2,700 MB/s read speeds compared to 2,000 MB/s for the Lexar SL660 Portable 2TB. That's a 35% speed advantage.
Which has better value, LaCie Rugged SSD Pro Portable 4TB or Lexar SL660 Portable 2TB?
The LaCie Rugged SSD Pro Portable 4TB scores higher (9.2 vs 8.2/10), indicating better overall value in our evaluation. Check both models on the retailer's site for the latest details.

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