Skip to main content
External 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.

Seagate One Touch SSD 500GB vs SSK PM510 USB4 1TB — Which External SSD Is Faster & Better Value?

Compare Seagate One Touch SSD 500GB and SSK PM510 USB4 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 500GB
7.6/10

The 500GB One Touch is Seagate's entry-level portable SSD — typically the cheapest brand-name 1050-class Gen 2 drive at retail. Speeds are real-world faster than rated for short transfers; the catch is that the SLC cache is tiny.

1030 MB/s read
Cheapest brand-name Gen 2 SSD class
Both cables included
Check on Amazon →
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
Check on Amazon →

Spec Comparison

Spec
Seagate One Touch SSD 500GB
SSK PM510 USB4 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
7.6/10
8.6/10 ✓
Total Wins
0 wins
5 wins

Frequently Asked Questions

Which is better, Seagate One Touch SSD 500GB or SSK PM510 USB4 1TB?
The SSK PM510 USB4 1TB scores 8.6/10 compared to 7.6/10 for the Seagate One Touch SSD 500GB. Our expert analysis favors the SSK PM510 USB4 1TB for its superior speed.
What's the difference between Seagate One Touch SSD 500GB and SSK PM510 USB4 1TB?
The key differences: The Seagate One Touch SSD 500GB offers 1,030 MB/s reads vs 3,200 MB/s for the SSK PM510 USB4 1TB. Capacity options differ: Seagate One Touch SSD 500GB is 500GB while SSK PM510 USB4 1TB is 1TB. The Seagate One Touch SSD 500GB uses USB 3.2 Gen 2 while the SSK PM510 USB4 1TB uses USB4.
Which is faster, Seagate One Touch SSD 500GB or SSK PM510 USB4 1TB?
The SSK PM510 USB4 1TB is faster with 3,200 MB/s read speeds compared to 1,030 MB/s for the Seagate One Touch SSD 500GB. That's a 211% speed advantage.
Which has better value, Seagate One Touch SSD 500GB or SSK PM510 USB4 1TB?
The SSK PM510 USB4 1TB scores higher (8.6 vs 7.6/10), indicating better overall value in our evaluation. Check both models on the retailer's site for the latest details.

More Comparisons

Seagate One Touch SSD 500GB vs Samsung T9 2TB → SSK PM510 USB4 1TB vs Samsung T9 2TB →
Seagate One Touch SSD 500GB vs Samsung T9 Portable SSD → SSK PM510 USB4 1TB vs Samsung T9 Portable SSD →
Seagate One Touch SSD 500GB vs Crucial X10 Pro 2TB → SSK PM510 USB4 1TB vs Crucial X10 Pro 2TB →
Seagate One Touch SSD 500GB vs Samsung T7 4TB → SSK PM510 USB4 1TB vs Samsung T7 4TB →