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Portable SSDs

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Lexar SL100 Pro Portable 1TB vs SSK PM510 USB4 Portable 1TB — Which Portable SSD Is Faster & Better Value?

Compare Lexar SL100 Pro Portable 1TB and SSK PM510 USB4 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.

Lexar

Lexar SL100 Pro Portable 1TB
7.5/10

A brushed-aluminum portable SSD the size of a credit card -- one of the smallest 1TB Gen 2 SSDs in retail. Buy it for the form factor; the 950 MB/s rating undershoots the full 1050 Gen 2 ceiling.

Brushed-aluminum case
950 MB/s read
Tiny credit-card footprint
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Our Pick

SSK

SSK PM510 USB4 Portable 1TB
8.6/10

A USB4 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 do not want to pay LaCie or OWC premium.

USB4 3200 MB/s
Thunderbolt 4 compatible
Aluminum body
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Spec Comparison

Spec
Lexar SL100 Pro Portable 1TB
SSK PM510 USB4 Portable 1TB
Read Speed
950 MB/s
3.2 GB/s ✓
Write Speed
950 MB/s
2.8 GB/s ✓
Capacity
1 TB
1 TB
Interface
USB 3.2 Gen 2
USB4
Endurance (TBW)
600 TB
600 TB
Warranty
3 Years
3 Years
Score
7.5/10
8.6/10 ✓
Total Wins
0 wins
3 wins

Frequently Asked Questions

Which is better, Lexar SL100 Pro Portable 1TB or SSK PM510 USB4 Portable 1TB?
The SSK PM510 USB4 Portable 1TB scores 8.6/10 compared to 7.5/10 for the Lexar SL100 Pro Portable 1TB. Our expert analysis favors the SSK PM510 USB4 Portable 1TB for its superior speed.
What's the difference between Lexar SL100 Pro Portable 1TB and SSK PM510 USB4 Portable 1TB?
The key differences: The Lexar SL100 Pro Portable 1TB offers 950 MB/s reads vs 3,200 MB/s for the SSK PM510 USB4 Portable 1TB. Capacity options differ: Lexar SL100 Pro Portable 1TB is 1TB while SSK PM510 USB4 Portable 1TB is 1TB. The Lexar SL100 Pro Portable 1TB uses USB 3.2 Gen 2 while the SSK PM510 USB4 Portable 1TB uses USB4.
Which is faster, Lexar SL100 Pro Portable 1TB or SSK PM510 USB4 Portable 1TB?
The SSK PM510 USB4 Portable 1TB is faster with 3,200 MB/s read speeds compared to 950 MB/s for the Lexar SL100 Pro Portable 1TB. That's a 237% speed advantage.
Which has better value, Lexar SL100 Pro Portable 1TB or SSK PM510 USB4 Portable 1TB?
The SSK PM510 USB4 Portable 1TB scores higher (8.6 vs 7.5/10), indicating better overall value in our evaluation. Check both models on the retailer's site for the latest details.

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