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Portable SSDs

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Samsung T7 Portable 4TB vs SSK PM510 USB4 Portable 1TB

Compare Samsung T7 Portable 4TB and SSK PM510 USB4 Portable 1TB side by side. Both are 4TB USB 3.2 Gen 2 external SSDs, but they differ in speed, design, and value. Here's how they stack up.

Our Pick

Samsung

Samsung T7 Portable 4TB
9.4/10

The 4TB T7 is the convenience-grade size for travelers who carry whole media libraries — full photo shoots, complete plex libraries, plus Time Machine backup. 2400 TBW on the 4TB tier is meaningful endurance for a portable.

4TB portable Gen 2
2400 TBW endurance
Sustained writes pegged
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 T7 Portable 4TB
SSK PM510 USB4 Portable 1TB
Read Speed
1.1 GB/s
3.2 GB/s ✓
Write Speed
1.0 GB/s
2.8 GB/s ✓
Capacity
4 TB ✓
1 TB
Interface
USB 3.2 Gen 2
USB4
Endurance (TBW)
2,400 TB ✓
600 TB
Warranty
3 Years
3 Years
Score
9.4/10 ✓
8.6/10
Total Wins
3 wins
2 wins

Frequently Asked Questions

Which is better, Samsung T7 Portable 4TB or SSK PM510 USB4 Portable 1TB?
The Samsung T7 Portable 4TB scores 9.4/10 compared to 8.6/10 for the SSK PM510 USB4 Portable 1TB. Our expert analysis favors the Samsung T7 Portable 4TB for its superior value.
What's the difference between Samsung T7 Portable 4TB and SSK PM510 USB4 Portable 1TB?
The key differences: The Samsung T7 Portable 4TB offers 1,050 MB/s reads vs 3,200 MB/s for the SSK PM510 USB4 Portable 1TB. Capacity options differ: Samsung T7 Portable 4TB is 4TB while SSK PM510 USB4 Portable 1TB is 1TB. The Samsung T7 Portable 4TB uses USB 3.2 Gen 2 while the SSK PM510 USB4 Portable 1TB uses USB4.
Which is faster, Samsung T7 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 1,050 MB/s for the Samsung T7 Portable 4TB. That's a 205% speed advantage.
Which has better value, Samsung T7 Portable 4TB or SSK PM510 USB4 Portable 1TB?
The Samsung T7 Portable 4TB scores higher (9.4 vs 8.6/10), indicating better overall value in our evaluation. Check both models on the retailer's site for the latest details.

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