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.

Sabrent Rocket XTRM-Q 2TB vs SSK PM510 USB4 1TB

Compare Sabrent Rocket XTRM-Q 2TB and SSK PM510 USB4 1TB side by side. Both are 2TB Thunderbolt 3 external SSDs, but they differ in speed, design, and value. Here's how they stack up.

Sabrent

Sabrent Rocket XTRM-Q 2TB

8.6/10

The 2TB XTRM-Q is the model that put Sabrent's portable Thunderbolt line on the map for Mac users who needed internal-class speeds in an external chassis. Like the 1TB, it dedicated to Thunderbolt 3/4 hosts — on USB only you'll see Gen 2 speed (~1050 MB/s), not the headline 2700 MB/s.

Thunderbolt-class 2700 MB/s

Doubles capacity of base XTRM-Q

Cables included

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

Sabrent Rocket XTRM-Q 2TB

SSK PM510 USB4 1TB

Read Speed

2.7 GB/s

3.2 GB/s ✓

Write Speed

2.7 GB/s

2.8 GB/s ✓

Capacity

2 TB ✓

1 TB

Interface

Thunderbolt 3

USB4

Endurance (TBW)

1,200 TB ✓

600 TB

Warranty

3 Years

Score

8.6/10

Total Wins

2 wins

Frequently Asked Questions

Which is better, Sabrent Rocket XTRM-Q 2TB or SSK PM510 USB4 1TB?

Both drives score 8.6/10 in our expert testing. The best choice depends on your specific needs.

What's the difference between Sabrent Rocket XTRM-Q 2TB and SSK PM510 USB4 1TB?

The key differences: The Sabrent Rocket XTRM-Q 2TB offers 2,700 MB/s reads vs 3,200 MB/s for the SSK PM510 USB4 1TB. Capacity options differ: Sabrent Rocket XTRM-Q 2TB is 2TB while SSK PM510 USB4 1TB is 1TB. The Sabrent Rocket XTRM-Q 2TB uses Thunderbolt 3 while the SSK PM510 USB4 1TB uses USB4.

Which is faster, Sabrent Rocket XTRM-Q 2TB or SSK PM510 USB4 1TB?

The SSK PM510 USB4 1TB is faster with 3,200 MB/s read speeds compared to 2,700 MB/s for the Sabrent Rocket XTRM-Q 2TB. That's a 19% speed advantage.

Which has better value, Sabrent Rocket XTRM-Q 2TB or SSK PM510 USB4 1TB?

Both drives score the same in our evaluation. Consider features, endurance, and warranty to determine which suits your needs better.

More Comparisons

Sabrent Rocket XTRM-Q 2TB vs Samsung T9 2TB → SSK PM510 USB4 1TB vs Samsung T9 2TB →

Sabrent Rocket XTRM-Q 2TB vs Samsung T9 Portable SSD → SSK PM510 USB4 1TB vs Samsung T9 Portable SSD →

Sabrent Rocket XTRM-Q 2TB vs Crucial X10 Pro 2TB → SSK PM510 USB4 1TB vs Crucial X10 Pro 2TB →

Sabrent Rocket XTRM-Q 2TB vs Samsung T7 4TB → SSK PM510 USB4 1TB vs Samsung T7 4TB →