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Portable SSDs

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Seagate One Touch SSD Portable 500GB vs SSK PM510 USB4 Portable 1TB

Compare Seagate One Touch SSD Portable 500GB and SSK PM510 USB4 Portable 1TB side by side. Both are 500GB 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 500GB
7.5/10

A 500GB One Touch is Seagate's bottom-of-line portable SSD — usually the cheapest brand-name Gen 2 1TB-and-below portable at retail. The bundle includes Rescue data recovery (extending Seagate's warranty protection into physical damage recovery).

1030 MB/s read
Budget pricing
Both USB-C and USB-A cables
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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 500GB
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
500 GB
1 TB ✓
Interface
USB 3.2 Gen 2
USB4
Endurance (TBW)
300 TB
600 TB ✓
Warranty
3 Years
3 Years
Score
7.5/10
8.6/10 ✓
Total Wins
0 wins
5 wins

Frequently Asked Questions

Which is better, Seagate One Touch SSD Portable 500GB or SSK PM510 USB4 Portable 1TB?
The SSK PM510 USB4 Portable 1TB scores 8.6/10 compared to 7.5/10 for the Seagate One Touch SSD Portable 500GB. Our expert analysis favors the SSK PM510 USB4 Portable 1TB for its superior speed.
What's the difference between Seagate One Touch SSD Portable 500GB and SSK PM510 USB4 Portable 1TB?
The key differences: The Seagate One Touch SSD Portable 500GB 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 500GB is 500GB while SSK PM510 USB4 Portable 1TB is 1TB. The Seagate One Touch SSD Portable 500GB uses USB 3.2 Gen 2 while the SSK PM510 USB4 Portable 1TB uses USB4.
Which is faster, Seagate One Touch SSD Portable 500GB 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 500GB. That's a 211% speed advantage.
Which has better value, Seagate One Touch SSD Portable 500GB or SSK PM510 USB4 Portable 1TB?
The SSK PM510 USB4 Portable 1TB scores higher (8.6 vs 7.5/10), indicating better overall value in our evaluation. Check both models on the retailer's site for the latest details.

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