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Crucial X6 1TB vs Lexar SL660 1TB

Compare Crucial X6 1TB and Lexar SL660 1TB 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 1TB

8.1/10

A premium 2000 MB/s Gen 2x2 portable with an aluminum body and an RGB-lit Logo. The RGB is a divisive feature but the performance is real, and the build quality distinguishes it from cheaper Gen 2x2 peers like the Patriot Evlvr.

Gen 2x2 2000/2000 MB/s

Aluminum body

3-year warranty

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Spec Comparison

Spec

Crucial X6 1TB

Lexar SL660 1TB

Read Speed

800 MB/s

2.0 GB/s ✓

Write Speed

800 MB/s

2.0 GB/s ✓

Capacity

1 TB

Interface

USB 3.2 Gen 2

USB 3.2 Gen 2x2

Endurance (TBW)

600 TB

Warranty

3 Years

Score

7.8/10

8.1/10 ✓

Total Wins

0 wins

3 wins

Frequently Asked Questions

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

The Lexar SL660 1TB scores 8.1/10 compared to 7.8/10 for the Crucial X6 1TB. Our expert analysis favors the Lexar SL660 1TB for its superior speed.

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

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

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

The Lexar SL660 1TB 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 1TB?

The Lexar SL660 1TB scores higher (8.1 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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