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Portable SSDs

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SanDisk Extreme Portable SSD vs SSK PM510 USB4 Portable 1TB

Compare SanDisk Extreme Portable SSD 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.

Our Pick

SanDisk

SanDisk Extreme Portable SSD
8.7/10

Rugged, reliable portable storage with IP55 rating. Built for adventure with a convenient loop design.

IP55 water and dust resistance
Drop-proof up to 3 meters
Compact and lightweight
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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
SanDisk Extreme Portable SSD
SSK PM510 USB4 Portable 1TB
Read Speed
1.1 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)
500 TB
600 TB ✓
Warranty
3 Years
3 Years
Score
8.7/10 ✓
8.6/10
Total Wins
2 wins
3 wins

Frequently Asked Questions

Which is better, SanDisk Extreme Portable SSD or SSK PM510 USB4 Portable 1TB?
The SanDisk Extreme Portable SSD scores 8.7/10 compared to 8.6/10 for the SSK PM510 USB4 Portable 1TB. Our expert analysis favors the SanDisk Extreme Portable SSD for its superior value.
What's the difference between SanDisk Extreme Portable SSD and SSK PM510 USB4 Portable 1TB?
The key differences: The SanDisk Extreme Portable SSD offers 1,050 MB/s reads vs 3,200 MB/s for the SSK PM510 USB4 Portable 1TB. Capacity options differ: SanDisk Extreme Portable SSD is 1TB while SSK PM510 USB4 Portable 1TB is 1TB. The SanDisk Extreme Portable SSD uses USB 3.2 Gen 2 while the SSK PM510 USB4 Portable 1TB uses USB4.
Which is faster, SanDisk Extreme Portable SSD 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 SanDisk Extreme Portable SSD. That's a 205% speed advantage.
Which has better value, SanDisk Extreme Portable SSD or SSK PM510 USB4 Portable 1TB?
The SanDisk Extreme Portable SSD scores higher (8.7 vs 8.6/10), indicating better overall value in our evaluation. Check both models on the retailer's site for the latest details.

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