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Portable SSDs

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Seagate One Touch SSD Portable 1TB vs SSK PM510 USB4 Portable 1TB — Which Portable SSD Is Faster & Better Value?

Compare Seagate One Touch SSD Portable 1TB and SSK PM510 USB4 Portable 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.

Seagate

Seagate One Touch SSD Portable 1TB
7.7/10

A 1TB budget portable from Seagate — typically the lowest-priced 1TB brand-name Gen 2 portable SSD available. Comes with the Resident Rescue data-recovery plan, which is meaningful coverage at a price point where the drive is seen as disposable.

1030 MB/s budget drive
Both USB-C/A cables
Rescue data recovery plan
Check on Amazon →
Our Pick

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
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Spec Comparison

Spec
Seagate One Touch SSD Portable 1TB
SSK PM510 USB4 Portable 1TB
Read Speed
1.0 GB/s
3.2 GB/s ✓
Write Speed
1.0 GB/s
2.8 GB/s ✓
Capacity
1 TB
1 TB
Interface
USB 3.2 Gen 2
USB4
Endurance (TBW)
600 TB
600 TB
Warranty
3 Years
3 Years
Score
7.7/10
8.6/10 ✓
Total Wins
0 wins
3 wins

Frequently Asked Questions

Which is better, Seagate One Touch SSD Portable 1TB or SSK PM510 USB4 Portable 1TB?
The SSK PM510 USB4 Portable 1TB scores 8.6/10 compared to 7.7/10 for the Seagate One Touch SSD Portable 1TB. Our expert analysis favors the SSK PM510 USB4 Portable 1TB for its superior speed.
What's the difference between Seagate One Touch SSD Portable 1TB and SSK PM510 USB4 Portable 1TB?
The key differences: The Seagate One Touch SSD Portable 1TB offers 1,030 MB/s reads vs 3,200 MB/s for the SSK PM510 USB4 Portable 1TB. Capacity options differ: Seagate One Touch SSD Portable 1TB is 1TB while SSK PM510 USB4 Portable 1TB is 1TB. The Seagate One Touch SSD Portable 1TB uses USB 3.2 Gen 2 while the SSK PM510 USB4 Portable 1TB uses USB4.
Which is faster, Seagate One Touch SSD Portable 1TB or SSK PM510 USB4 Portable 1TB?
The SSK PM510 USB4 Portable 1TB is faster with 3,200 MB/s read speeds compared to 1,030 MB/s for the Seagate One Touch SSD Portable 1TB. That's a 211% speed advantage.
Which has better value, Seagate One Touch SSD Portable 1TB or SSK PM510 USB4 Portable 1TB?
The SSK PM510 USB4 Portable 1TB scores higher (8.6 vs 7.7/10), indicating better overall value in our evaluation. Check both models on the retailer's site for the latest details.

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