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Portable SSDs

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Crucial X6 Portable 1TB vs Lexar SL660 Portable 2TB

Compare Crucial X6 Portable 1TB and Lexar SL660 Portable 2TB 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 X6 Portable 1TB
7.6/10

A budget 1TB Gen 2 portable for the portable-SSD crowd — 800 MB/s is below the Gen 2 ceiling but exactly what's needed for Time Machine and laptop backup workflows that don't depend on peak speeds. Picks IP-rating-free build to keep price aggressive.

800 MB/s read
Budget pricing
PS5/Xbox cold-library compatible
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Our Pick

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
Crucial X6 Portable 1TB
Lexar SL660 Portable 2TB
Read Speed
800 MB/s
2.0 GB/s ✓
Write Speed
800 MB/s
2.0 GB/s ✓
Capacity
1 TB
2 TB ✓
Interface
USB 3.2 Gen 2
USB 3.2 Gen 2x2
Endurance (TBW)
600 TB
1,200 TB ✓
Warranty
3 Years
3 Years
Score
7.6/10
8.2/10 ✓
Total Wins
0 wins
5 wins

Frequently Asked Questions

Which is better, Crucial X6 Portable 1TB or Lexar SL660 Portable 2TB?
The Lexar SL660 Portable 2TB scores 8.2/10 compared to 7.6/10 for the Crucial X6 Portable 1TB. Our expert analysis favors the Lexar SL660 Portable 2TB for its superior speed.
What's the difference between Crucial X6 Portable 1TB and Lexar SL660 Portable 2TB?
The key differences: The Crucial X6 Portable 1TB offers 800 MB/s reads vs 2,000 MB/s for the Lexar SL660 Portable 2TB. Capacity options differ: Crucial X6 Portable 1TB is 1TB while Lexar SL660 Portable 2TB is 2TB. The Crucial X6 Portable 1TB uses USB 3.2 Gen 2 while the Lexar SL660 Portable 2TB uses USB 3.2 Gen 2x2.
Which is faster, Crucial X6 Portable 1TB or Lexar SL660 Portable 2TB?
The Lexar SL660 Portable 2TB is faster with 2,000 MB/s read speeds compared to 800 MB/s for the Crucial X6 Portable 1TB. That's a 150% speed advantage.
Which has better value, Crucial X6 Portable 1TB or Lexar SL660 Portable 2TB?
The Lexar SL660 Portable 2TB scores higher (8.2 vs 7.6/10), indicating better overall value in our evaluation. Check both models on the retailer's site for the latest details.

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