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Lexar SL660 2TB vs SSK PM510 USB4 1TB

Compare Lexar SL660 2TB and SSK PM510 USB4 1TB 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

SSK

SSK PM510 USB4 1TB

8.6/10

AUSB4 portable at enthusiast-grade specs — 3200 MB/s read over USB4 / Thunderbolt 4 hosts. The PM510 is one of the more affordable USB4 portables, an entry point for video editors who need Thunderbolt-class speeds but don't want to pay LaCie or OWC premium.

USB4 3200 MB/s

Thunderbolt 4 compatible

Aluminum body

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Spec Comparison

Spec

Lexar SL660 2TB

SSK PM510 USB4 1TB

Read Speed

2.0 GB/s

3.2 GB/s ✓

Write Speed

2.0 GB/s

2.8 GB/s ✓

Capacity

2 TB ✓

1 TB

Interface

USB 3.2 Gen 2x2

USB4

Endurance (TBW)

1,200 TB ✓

600 TB

Warranty

3 Years

Score

8.2/10

8.6/10 ✓

Total Wins

2 wins

3 wins

Frequently Asked Questions

Which is better, Lexar SL660 2TB or SSK PM510 USB4 1TB?

The SSK PM510 USB4 1TB scores 8.6/10 compared to 8.2/10 for the Lexar SL660 2TB. Our expert analysis favors the SSK PM510 USB4 1TB for its superior speed.

What's the difference between Lexar SL660 2TB and SSK PM510 USB4 1TB?

The key differences: The Lexar SL660 2TB offers 2,000 MB/s reads vs 3,200 MB/s for the SSK PM510 USB4 1TB. Capacity options differ: Lexar SL660 2TB is 2TB while SSK PM510 USB4 1TB is 1TB. The Lexar SL660 2TB uses USB 3.2 Gen 2x2 while the SSK PM510 USB4 1TB uses USB4.

Which is faster, Lexar SL660 2TB or SSK PM510 USB4 1TB?

The SSK PM510 USB4 1TB is faster with 3,200 MB/s read speeds compared to 2,000 MB/s for the Lexar SL660 2TB. That's a 60% speed advantage.

Which has better value, Lexar SL660 2TB or SSK PM510 USB4 1TB?

The SSK PM510 USB4 1TB scores higher (8.6 vs 8.2/10), indicating better overall value in our evaluation. Check both models on the retailer's site for the latest details.

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