Skip to main content
Portable 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.

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

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

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 →
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 →

Spec Comparison

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

Frequently Asked Questions

Which is better, SSK PM510 USB4 Portable 1TB or Samsung T9 Portable 4TB?
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 SSK PM510 USB4 Portable 1TB and Samsung T9 Portable 4TB?
The key differences: The SSK PM510 USB4 Portable 1TB offers 3,200 MB/s reads vs 2,000 MB/s for the Samsung T9 Portable 4TB. Capacity options differ: SSK PM510 USB4 Portable 1TB is 1TB while Samsung T9 Portable 4TB is 4TB. The SSK PM510 USB4 Portable 1TB uses USB4 while the Samsung T9 Portable 4TB uses USB 3.2 Gen 2x2.
Which is faster, SSK PM510 USB4 Portable 1TB or Samsung T9 Portable 4TB?
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, SSK PM510 USB4 Portable 1TB or Samsung T9 Portable 4TB?
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

SSK PM510 USB4 Portable 1TB vs Samsung T9 Portable SSD → Samsung T9 Portable 4TB vs Samsung T9 Portable SSD →
SSK PM510 USB4 Portable 1TB vs Crucial X10 Pro Portable 4TB → Samsung T9 Portable 4TB vs Crucial X10 Pro Portable 4TB →
SSK PM510 USB4 Portable 1TB vs Sabrent Rocket Nano V2 → Samsung T9 Portable 4TB vs Sabrent Rocket Nano V2 →
SSK PM510 USB4 Portable 1TB vs Samsung T9 Portable 2TB → Samsung T9 Portable 4TB vs Samsung T9 Portable 2TB →