Skip to main content
External SSDs

As an Amazon Associate I earn from qualifying purchases. We may earn a commission from qualifying purchases made through links on this page. Prices and availability are subject to change. We are reader-supported and independent — our rankings are based on an objective scoring rubric, not sponsorship.

Lexar SL660 1TB vs SanDisk Extreme Pro Portable 2TB

Compare Lexar SL660 1TB and SanDisk Extreme Pro Portable 2TB side by side. Both are 1TB USB 3.2 Gen 2x2 external SSDs, but they differ in speed, design, and value. Here's how they stack up.

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
Check on Amazon →
Our Pick

SanDisk

SanDisk Extreme Pro Portable 2TB
9.2/10

The 2TB Extreme Pro is where SanDisk's ruggedization meets real-world capacity — enough room for a 4K video project, full Lightroom catalog, and Time Machine backup simultaneously. The IP55 shell handles trail dust and light rain where the T7 would not.

IP55 rugged body
5-year warranty
Both cables in box
Check on Amazon →

Spec Comparison

Spec
Lexar SL660 1TB
SanDisk Extreme Pro Portable 2TB
Read Speed
2.0 GB/s ✓
1.1 GB/s
Write Speed
2.0 GB/s ✓
1.0 GB/s
Capacity
1 TB
2 TB ✓
Interface
USB 3.2 Gen 2x2
USB 3.2 Gen 2
Endurance (TBW)
600 TB
1,200 TB ✓
Warranty
3 Years
5 Years ✓
Score
8.1/10
9.2/10 ✓
Total Wins
2 wins
4 wins

Frequently Asked Questions

Which is better, Lexar SL660 1TB or SanDisk Extreme Pro Portable 2TB?
The SanDisk Extreme Pro Portable 2TB scores 9.2/10 compared to 8.1/10 for the Lexar SL660 1TB. Our expert analysis favors the SanDisk Extreme Pro Portable 2TB for its superior value.
What's the difference between Lexar SL660 1TB and SanDisk Extreme Pro Portable 2TB?
The key differences: The Lexar SL660 1TB offers 2,000 MB/s reads vs 1,050 MB/s for the SanDisk Extreme Pro Portable 2TB. Capacity options differ: Lexar SL660 1TB is 1TB while SanDisk Extreme Pro Portable 2TB is 2TB. The Lexar SL660 1TB uses USB 3.2 Gen 2x2 while the SanDisk Extreme Pro Portable 2TB uses USB 3.2 Gen 2.
Which is faster, Lexar SL660 1TB or SanDisk Extreme Pro Portable 2TB?
The Lexar SL660 1TB is faster with 2,000 MB/s read speeds compared to 1,050 MB/s for the SanDisk Extreme Pro Portable 2TB. That's a 90% speed advantage.
Which has better value, Lexar SL660 1TB or SanDisk Extreme Pro Portable 2TB?
The SanDisk Extreme Pro Portable 2TB scores higher (9.2 vs 8.1/10), indicating better overall value in our evaluation. Check both models on the retailer's site for the latest details.

More Comparisons

Lexar SL660 1TB vs Samsung T9 2TB → SanDisk Extreme Pro Portable 2TB vs Samsung T9 2TB →
Lexar SL660 1TB vs Samsung T9 Portable SSD → SanDisk Extreme Pro Portable 2TB vs Samsung T9 Portable SSD →
Lexar SL660 1TB vs Crucial X10 Pro 2TB → SanDisk Extreme Pro Portable 2TB vs Crucial X10 Pro 2TB →
Lexar SL660 1TB vs Samsung T7 4TB → SanDisk Extreme Pro Portable 2TB vs Samsung T7 4TB →