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External SSDs

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Lexar SL660 2TB vs OWC Envoy Pro FX 4TB

Compare Lexar SL660 2TB and OWC Envoy Pro FX 4TB side by side. Both are 2TB USB 3.2 Gen 2x2 external SSDs, but they differ in speed, design, and value. Here's how they stack up.

Lexar

Lexar SL660 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. Worth comparing with the Kingston XS2000 2TB and Patriot Evlvr 2TB.

Gen 2x2 2000 MB/s
2TB storage
Aluminum body
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Our Pick

OWC

OWC Envoy Pro FX 4TB
8.9/10

4TB of Thunderbolt 3 storage in an aluminum unibody barely larger than the 1TB. The Envoy Pro FX 4TB is a niche-of-one — buyers typically pay the premium for video editing workflows where 4000 MB/s sustained links plus 4TB of room actually matter.

Thunderbolt 3 + 4TB
Aluminum unibody
2800 sustained writes
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Spec Comparison

Spec
Lexar SL660 2TB
OWC Envoy Pro FX 4TB
Read Speed
2.0 GB/s
2.8 GB/s ✓
Write Speed
2.0 GB/s
2.8 GB/s ✓
Capacity
2 TB
4 TB ✓
Interface
USB 3.2 Gen 2x2
Thunderbolt 3
Endurance (TBW)
1,200 TB
2,400 TB ✓
Warranty
3 Years
3 Years
Score
8.2/10
8.9/10 ✓
Total Wins
0 wins
5 wins

Frequently Asked Questions

Which is better, Lexar SL660 2TB or OWC Envoy Pro FX 4TB?
The OWC Envoy Pro FX 4TB scores 8.9/10 compared to 8.2/10 for the Lexar SL660 2TB. Our expert analysis favors the OWC Envoy Pro FX 4TB for its superior speed.
What's the difference between Lexar SL660 2TB and OWC Envoy Pro FX 4TB?
The key differences: The Lexar SL660 2TB offers 2,000 MB/s reads vs 2,800 MB/s for the OWC Envoy Pro FX 4TB. Capacity options differ: Lexar SL660 2TB is 2TB while OWC Envoy Pro FX 4TB is 4TB. The Lexar SL660 2TB uses USB 3.2 Gen 2x2 while the OWC Envoy Pro FX 4TB uses Thunderbolt 3.
Which is faster, Lexar SL660 2TB or OWC Envoy Pro FX 4TB?
The OWC Envoy Pro FX 4TB is faster with 2,800 MB/s read speeds compared to 2,000 MB/s for the Lexar SL660 2TB. That's a 40% speed advantage.
Which has better value, Lexar SL660 2TB or OWC Envoy Pro FX 4TB?
The OWC Envoy Pro FX 4TB scores higher (8.9 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

Lexar SL660 2TB vs Samsung T9 2TB → OWC Envoy Pro FX 4TB vs Samsung T9 2TB →
Lexar SL660 2TB vs Samsung T9 Portable SSD → OWC Envoy Pro FX 4TB vs Samsung T9 Portable SSD →
Lexar SL660 2TB vs Crucial X10 Pro 2TB → OWC Envoy Pro FX 4TB vs Crucial X10 Pro 2TB →
Lexar SL660 2TB vs Samsung T7 4TB → OWC Envoy Pro FX 4TB vs Samsung T7 4TB →