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Crucial X6 1TB vs SSK PM510 USB4 1TB

Compare Crucial X6 1TB and SSK PM510 USB4 1TB side by side. Both are 1TB USB 3.2 Gen 2 external SSDs, but they differ in speed, design, and value. Here's how they stack up.

Crucial

Crucial X6 1TB

7.8/10

The X6 is Crucial's budget Gen 2 line — half the speed of the X9 Pro at typically half the price. A sensible choice for game-library expansion on PS5/Xbox or as a Time Machine drive, where sustained write speed matters far less than capacity-per-dollar.

800 MB/s over Gen 2

Cheapest per-TB of Crucial's portable line

Compatible with PS5/Xbox expandable storage

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Our Pick

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

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Spec Comparison

Spec

Crucial X6 1TB

SSK PM510 USB4 1TB

Read Speed

800 MB/s

3.2 GB/s ✓

Write Speed

800 MB/s

2.8 GB/s ✓

Capacity

1 TB

Interface

USB 3.2 Gen 2

USB4

Endurance (TBW)

600 TB

Warranty

3 Years

Score

7.8/10

8.6/10 ✓

Total Wins

0 wins

3 wins

Frequently Asked Questions

Which is better, Crucial X6 1TB or SSK PM510 USB4 1TB?

The SSK PM510 USB4 1TB scores 8.6/10 compared to 7.8/10 for the Crucial X6 1TB. Our expert analysis favors the SSK PM510 USB4 1TB for its superior speed.

What's the difference between Crucial X6 1TB and SSK PM510 USB4 1TB?

The key differences: The Crucial X6 1TB offers 800 MB/s reads vs 3,200 MB/s for the SSK PM510 USB4 1TB. Capacity options differ: Crucial X6 1TB is 1TB while SSK PM510 USB4 1TB is 1TB. The Crucial X6 1TB uses USB 3.2 Gen 2 while the SSK PM510 USB4 1TB uses USB4.

Which is faster, Crucial X6 1TB or SSK PM510 USB4 1TB?

The SSK PM510 USB4 1TB is faster with 3,200 MB/s read speeds compared to 800 MB/s for the Crucial X6 1TB. That's a 300% speed advantage.

Which has better value, Crucial X6 1TB or SSK PM510 USB4 1TB?

The SSK PM510 USB4 1TB scores higher (8.6 vs 7.8/10), indicating better overall value in our evaluation. Check both models on the retailer's site for the latest details.

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