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.

Crucial X9 Pro Portable 2TB vs SSK PM510 USB4 Portable 1TB

Compare Crucial X9 Pro Portable 2TB and SSK PM510 USB4 Portable 1TB side by side. Both are 2TB USB 3.2 Gen 2 external SSDs, but they differ in speed, design, and value. Here's how they stack up.

Our Pick

Crucial

Crucial X9 Pro Portable 2TB
9.0/10

The 2TB X9 Pro doubles the cache budget over the 1TB. Real TLC NAND and 5-year warranty gives Crucial's premium portable line a longer-lived write endurance than consumer QLC alternatives. The right buy for editors who want a working drive rather than a backup drive.

Real TLC NAND
5-year warranty
1200 TBW endurance
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
Crucial X9 Pro Portable 2TB
SSK PM510 USB4 Portable 1TB
Read Speed
1.1 GB/s
3.2 GB/s ✓
Write Speed
950 MB/s
2.8 GB/s ✓
Capacity
2 TB ✓
1 TB
Interface
USB 3.2 Gen 2
USB4
Endurance (TBW)
1,200 TB ✓
600 TB
Warranty
5 Years ✓
3 Years
Score
9.0/10 ✓
8.6/10
Total Wins
4 wins
2 wins

Frequently Asked Questions

Which is better, Crucial X9 Pro Portable 2TB or SSK PM510 USB4 Portable 1TB?
The Crucial X9 Pro Portable 2TB scores 9.0/10 compared to 8.6/10 for the SSK PM510 USB4 Portable 1TB. Our expert analysis favors the Crucial X9 Pro Portable 2TB for its superior value.
What's the difference between Crucial X9 Pro Portable 2TB and SSK PM510 USB4 Portable 1TB?
The key differences: The Crucial X9 Pro Portable 2TB offers 1,050 MB/s reads vs 3,200 MB/s for the SSK PM510 USB4 Portable 1TB. Capacity options differ: Crucial X9 Pro Portable 2TB is 2TB while SSK PM510 USB4 Portable 1TB is 1TB. The Crucial X9 Pro Portable 2TB uses USB 3.2 Gen 2 while the SSK PM510 USB4 Portable 1TB uses USB4.
Which is faster, Crucial X9 Pro Portable 2TB 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 Crucial X9 Pro Portable 2TB. That's a 205% speed advantage.
Which has better value, Crucial X9 Pro Portable 2TB or SSK PM510 USB4 Portable 1TB?
The Crucial X9 Pro Portable 2TB scores higher (9.0 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

Crucial X9 Pro Portable 2TB vs Samsung T9 Portable SSD → SSK PM510 USB4 Portable 1TB vs Samsung T9 Portable SSD →
Crucial X9 Pro Portable 2TB vs Samsung T9 Portable 4TB → SSK PM510 USB4 Portable 1TB vs Samsung T9 Portable 4TB →
Crucial X9 Pro Portable 2TB vs Crucial X10 Pro Portable 4TB → SSK PM510 USB4 Portable 1TB vs Crucial X10 Pro Portable 4TB →
Crucial X9 Pro Portable 2TB vs Sabrent Rocket Nano V2 → SSK PM510 USB4 Portable 1TB vs Sabrent Rocket Nano V2 →