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Crucial X6 1TB vs Lexar SL660 2TB

Compare Crucial X6 1TB and Lexar SL660 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 1TB

7.8/10

The X6 is Crucial's budget Gen 2 line — half the speed of the X9 Pro at typically half the price. A sensible choice for game-library expansion on PS5/Xbox or as a Time Machine drive, where sustained write speed matters far less than capacity-per-dollar.

800 MB/s over Gen 2

Cheapest per-TB of Crucial's portable line

Compatible with PS5/Xbox expandable storage

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Our Pick

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 X6 1TB

Lexar SL660 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

Score

7.8/10

8.2/10 ✓

Total Wins

0 wins

5 wins

Frequently Asked Questions

Which is better, Crucial X6 1TB or Lexar SL660 2TB?

The Lexar SL660 2TB scores 8.2/10 compared to 7.8/10 for the Crucial X6 1TB. Our expert analysis favors the Lexar SL660 2TB for its superior speed.

What's the difference between Crucial X6 1TB and Lexar SL660 2TB?

The key differences: The Crucial X6 1TB offers 800 MB/s reads vs 2,000 MB/s for the Lexar SL660 2TB. Capacity options differ: Crucial X6 1TB is 1TB while Lexar SL660 2TB is 2TB. The Crucial X6 1TB uses USB 3.2 Gen 2 while the Lexar SL660 2TB uses USB 3.2 Gen 2x2.

Which is faster, Crucial X6 1TB or Lexar SL660 2TB?

The Lexar SL660 2TB is faster with 2,000 MB/s read speeds compared to 800 MB/s for the Crucial X6 1TB. That's a 150% speed advantage.

Which has better value, Crucial X6 1TB or Lexar SL660 2TB?

The Lexar SL660 2TB scores higher (8.2 vs 7.8/10), indicating better overall value in our evaluation. Check both models on the retailer's site for the latest details.

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