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Portable SSDs

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Samsung T9 Portable 4TB vs SSK PM510 USB4 Portable 1TB

Compare Samsung T9 Portable 4TB and SSK PM510 USB4 Portable 1TB side by side. Both are 4TB USB 3.2 Gen 2x2 external SSDs, but they differ in speed, design, and value. Here's how they stack up.

Our Pick

Samsung

Samsung T9 Portable 4TB
9.6/10

The 4TB T9 portable is genuinely rare — most 4TB external SSDs cap at Gen 2 (10Gbps) speeds. The T9 4TB holds 2000 MB/s sustained reads AND writes at 4TB. The right drive for working video pros who genuinely travel with 4TB of working RAW footage and need Gen 2x2 link speeds.

Gen 2x2 + 4TB
2400 TBW endurance
5-year warranty
Check on Amazon →

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
Check on Amazon →

Spec Comparison

Spec
Samsung T9 Portable 4TB
SSK PM510 USB4 Portable 1TB
Read Speed
2.0 GB/s
3.2 GB/s ✓
Write Speed
2.0 GB/s
2.8 GB/s ✓
Capacity
4 TB ✓
1 TB
Interface
USB 3.2 Gen 2x2
USB4
Endurance (TBW)
2,400 TB ✓
600 TB
Warranty
5 Years ✓
3 Years
Score
9.6/10 ✓
8.6/10
Total Wins
4 wins
2 wins

Frequently Asked Questions

Which is better, Samsung T9 Portable 4TB or SSK PM510 USB4 Portable 1TB?
The Samsung T9 Portable 4TB scores 9.6/10 compared to 8.6/10 for the SSK PM510 USB4 Portable 1TB. Our expert analysis favors the Samsung T9 Portable 4TB for its superior value.
What's the difference between Samsung T9 Portable 4TB and SSK PM510 USB4 Portable 1TB?
The key differences: The Samsung T9 Portable 4TB offers 2,000 MB/s reads vs 3,200 MB/s for the SSK PM510 USB4 Portable 1TB. Capacity options differ: Samsung T9 Portable 4TB is 4TB while SSK PM510 USB4 Portable 1TB is 1TB. The Samsung T9 Portable 4TB uses USB 3.2 Gen 2x2 while the SSK PM510 USB4 Portable 1TB uses USB4.
Which is faster, Samsung T9 Portable 4TB or SSK PM510 USB4 Portable 1TB?
The SSK PM510 USB4 Portable 1TB is faster with 3,200 MB/s read speeds compared to 2,000 MB/s for the Samsung T9 Portable 4TB. That's a 60% speed advantage.
Which has better value, Samsung T9 Portable 4TB or SSK PM510 USB4 Portable 1TB?
The Samsung T9 Portable 4TB scores higher (9.6 vs 8.6/10), indicating better overall value in our evaluation. Check both models on the retailer's site for the latest details.

More Comparisons

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Samsung T9 Portable 4TB vs Sabrent Rocket Nano V2 → SSK PM510 USB4 Portable 1TB vs Sabrent Rocket Nano V2 →
Samsung T9 Portable 4TB vs Samsung T9 Portable 2TB → SSK PM510 USB4 Portable 1TB vs Samsung T9 Portable 2TB →