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External SSDs

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Lexar SL660 2TB vs Sabrent Rocket XTRM-Q 4TB

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

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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Our Pick

Sabrent

Sabrent Rocket XTRM-Q 4TB
8.7/10

A 4TB Thunderbolt 3 portable SSD is genuinely rare — most vendors cap at 2TB. The 4TB XTRM-Q is the enthusiast-choice for working 8K RED RAW footage in the field. Price is high but for revenue-grade video work that needs the speed, nothing else at this capacity competes.

2700 MB/s Thunderbolt
4TB of high-speed storage
3-year manufacturer warranty
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Spec Comparison

Spec
Lexar SL660 2TB
Sabrent Rocket XTRM-Q 4TB
Read Speed
2.0 GB/s
2.7 GB/s ✓
Write Speed
2.0 GB/s
2.7 GB/s ✓
Capacity
2 TB
4 TB ✓
Interface
USB 3.2 Gen 2x2
Thunderbolt 3
Endurance (TBW)
1,200 TB
2,400 TB ✓
Warranty
3 Years
3 Years
Score
8.2/10
8.7/10 ✓
Total Wins
0 wins
5 wins

Frequently Asked Questions

Which is better, Lexar SL660 2TB or Sabrent Rocket XTRM-Q 4TB?
The Sabrent Rocket XTRM-Q 4TB scores 8.7/10 compared to 8.2/10 for the Lexar SL660 2TB. Our expert analysis favors the Sabrent Rocket XTRM-Q 4TB for its superior speed.
What's the difference between Lexar SL660 2TB and Sabrent Rocket XTRM-Q 4TB?
The key differences: The Lexar SL660 2TB offers 2,000 MB/s reads vs 2,700 MB/s for the Sabrent Rocket XTRM-Q 4TB. Capacity options differ: Lexar SL660 2TB is 2TB while Sabrent Rocket XTRM-Q 4TB is 4TB. The Lexar SL660 2TB uses USB 3.2 Gen 2x2 while the Sabrent Rocket XTRM-Q 4TB uses Thunderbolt 3.
Which is faster, Lexar SL660 2TB or Sabrent Rocket XTRM-Q 4TB?
The Sabrent Rocket XTRM-Q 4TB is faster with 2,700 MB/s read speeds compared to 2,000 MB/s for the Lexar SL660 2TB. That's a 35% speed advantage.
Which has better value, Lexar SL660 2TB or Sabrent Rocket XTRM-Q 4TB?
The Sabrent Rocket XTRM-Q 4TB scores higher (8.7 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

Lexar SL660 2TB vs Samsung T9 2TB → Sabrent Rocket XTRM-Q 4TB vs Samsung T9 2TB →
Lexar SL660 2TB vs Samsung T9 Portable SSD → Sabrent Rocket XTRM-Q 4TB vs Samsung T9 Portable SSD →
Lexar SL660 2TB vs Crucial X10 Pro 2TB → Sabrent Rocket XTRM-Q 4TB vs Crucial X10 Pro 2TB →
Lexar SL660 2TB vs Samsung T7 4TB → Sabrent Rocket XTRM-Q 4TB vs Samsung T7 4TB →