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External SSDs

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Crucial X10 Pro 4TB vs Lexar SL660 2TB

Compare Crucial X10 Pro 4TB and Lexar SL660 2TB side by side. Both are 4TB USB 3.2 Gen 2x2 external SSDs, but they differ in speed, design, and value. Here's how they stack up.

Our Pick

Crucial

Crucial X10 Pro 4TB
9.1/10

Professional-grade 4TB portable SSD with speeds up to 2100MB/s. Massive capacity for 8K video workflows and large creative projects.

4TB with fastest Gen 2x2 speeds up to 2100MB/s
IP55 water and dust resistance
Excellent 2400 TBW endurance
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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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Spec Comparison

Spec
Crucial X10 Pro 4TB
Lexar SL660 2TB
Read Speed
2.1 GB/s ✓
2.0 GB/s
Write Speed
2.0 GB/s
2.0 GB/s
Capacity
4 TB ✓
2 TB
Interface
USB 3.2 Gen 2x2
USB 3.2 Gen 2x2
Endurance (TBW)
2,400 TB ✓
1,200 TB
Warranty
5 Years ✓
3 Years
Score
9.1/10 ✓
8.2/10
Total Wins
5 wins
0 wins

Frequently Asked Questions

Which is better, Crucial X10 Pro 4TB or Lexar SL660 2TB?
The Crucial X10 Pro 4TB scores 9.1/10 compared to 8.2/10 for the Lexar SL660 2TB. Our expert analysis favors the Crucial X10 Pro 4TB for its superior speed.
What's the difference between Crucial X10 Pro 4TB and Lexar SL660 2TB?
The key differences: The Crucial X10 Pro 4TB offers 2,100 MB/s reads vs 2,000 MB/s for the Lexar SL660 2TB. Capacity options differ: Crucial X10 Pro 4TB is 4TB while Lexar SL660 2TB is 2TB. The Crucial X10 Pro 4TB uses USB 3.2 Gen 2x2 while the Lexar SL660 2TB uses USB 3.2 Gen 2x2.
Which is faster, Crucial X10 Pro 4TB or Lexar SL660 2TB?
The Crucial X10 Pro 4TB is faster with 2,100 MB/s read speeds compared to 2,000 MB/s for the Lexar SL660 2TB. That's a 5% speed advantage.
Which has better value, Crucial X10 Pro 4TB or Lexar SL660 2TB?
The Crucial X10 Pro 4TB scores higher (9.1 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

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