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Portable SSDs

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Crucial X8 Portable 1TB vs Lexar SL660 Portable 1TB

Compare Crucial X8 Portable 1TB and Lexar SL660 Portable 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.

Our Pick

Crucial

Crucial X8 Portable 1TB
8.3/10

The X8 is the previous-gen Crucial premium portable — superseded by the X9 Pro but often available at discounts. Same 1050/1000 MB/s, aluminum unibody, but a 3-year warranty. Worth buying if the sale price beats the X9 Pro by a meaningful margin.

1050/1000 MB/s
Anodized aluminum body
Often on clearance
Check on Amazon →

Lexar

Lexar SL660 Portable 1TB
8.1/10

A 1TB Gen 2x2 portable with an aluminum body and an RGB-lit Logo -- the RGB is divisive but the performance is real. Build quality distinguishes the SL660 from cheaper Gen 2x2 peers like the Patriot Evlvr.

Gen 2x2 2000/2000 MB/s
Aluminum body
3-year warranty
Check on Amazon →

Spec Comparison

Spec
Crucial X8 Portable 1TB
Lexar SL660 Portable 1TB
Read Speed
1.1 GB/s
2.0 GB/s ✓
Write Speed
1.0 GB/s
2.0 GB/s ✓
Capacity
1 TB
1 TB
Interface
USB 3.2 Gen 2
USB 3.2 Gen 2x2
Endurance (TBW)
600 TB
600 TB
Warranty
3 Years
3 Years
Score
8.3/10 ✓
8.1/10
Total Wins
1 win
2 wins

Frequently Asked Questions

Which is better, Crucial X8 Portable 1TB or Lexar SL660 Portable 1TB?
The Crucial X8 Portable 1TB scores 8.3/10 compared to 8.1/10 for the Lexar SL660 Portable 1TB. Our expert analysis favors the Crucial X8 Portable 1TB for its superior value.
What's the difference between Crucial X8 Portable 1TB and Lexar SL660 Portable 1TB?
The key differences: The Crucial X8 Portable 1TB offers 1,050 MB/s reads vs 2,000 MB/s for the Lexar SL660 Portable 1TB. Capacity options differ: Crucial X8 Portable 1TB is 1TB while Lexar SL660 Portable 1TB is 1TB. The Crucial X8 Portable 1TB uses USB 3.2 Gen 2 while the Lexar SL660 Portable 1TB uses USB 3.2 Gen 2x2.
Which is faster, Crucial X8 Portable 1TB or Lexar SL660 Portable 1TB?
The Lexar SL660 Portable 1TB is faster with 2,000 MB/s read speeds compared to 1,050 MB/s for the Crucial X8 Portable 1TB. That's a 90% speed advantage.
Which has better value, Crucial X8 Portable 1TB or Lexar SL660 Portable 1TB?
The Crucial X8 Portable 1TB scores higher (8.3 vs 8.1/10), indicating better overall value in our evaluation. Check both models on the retailer's site for the latest details.

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