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.

Samsung T7 4TB vs SSK PM510 USB4 1TB — Which External SSD Is Faster & Better Value?

Compare Samsung T7 4TB and SSK PM510 USB4 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 4TB

9.4/10

The 4TB T7 is the largest single-drive external storage most people can buy without moving to a wall-powered Thunderbolt desktop enclosure. Perfect for moving a desktop-grade media library between office, home, and field shoots.

4TB of pocket storage

Stays cool under sustained loads

Hardware encryption

Check on Amazon →

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

Check on Amazon →

Spec Comparison

Spec

Samsung T7 4TB

SSK PM510 USB4 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

Score

9.4/10 ✓

8.6/10

Total Wins

3 wins

2 wins

Frequently Asked Questions

Which is better, Samsung T7 4TB or SSK PM510 USB4 1TB?

The Samsung T7 4TB scores 9.4/10 compared to 8.6/10 for the SSK PM510 USB4 1TB. Our expert analysis favors the Samsung T7 4TB for its superior value.

What's the difference between Samsung T7 4TB and SSK PM510 USB4 1TB?

The key differences: The Samsung T7 4TB offers 1,050 MB/s reads vs 3,200 MB/s for the SSK PM510 USB4 1TB. Capacity options differ: Samsung T7 4TB is 4TB while SSK PM510 USB4 1TB is 1TB. The Samsung T7 4TB uses USB 3.2 Gen 2 while the SSK PM510 USB4 1TB uses USB4.

Which is faster, Samsung T7 4TB or SSK PM510 USB4 1TB?

The SSK PM510 USB4 1TB is faster with 3,200 MB/s read speeds compared to 1,050 MB/s for the Samsung T7 4TB. That's a 205% speed advantage.

Which has better value, Samsung T7 4TB or SSK PM510 USB4 1TB?

The Samsung T7 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.

More Comparisons

Samsung T7 4TB vs Samsung T9 2TB → SSK PM510 USB4 1TB vs Samsung T9 2TB →

Samsung T7 4TB vs Samsung T9 Portable SSD → SSK PM510 USB4 1TB vs Samsung T9 Portable SSD →

Samsung T7 4TB vs Crucial X10 Pro 2TB → SSK PM510 USB4 1TB vs Crucial X10 Pro 2TB →

Samsung T7 4TB vs Sabrent Rocket Nano XTRM-Q → SSK PM510 USB4 1TB vs Sabrent Rocket Nano XTRM-Q →