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External SSDs

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SanDisk Extreme Pro Portable 1TB vs SSK PM510 USB4 1TB

Compare SanDisk Extreme Pro Portable 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.

Our Pick

SanDisk

SanDisk Extreme Pro Portable 1TB
9.1/10

A 1050 MB/s portable SSD in an aluminum-and-rubber body with an IP55 dust/water rating. The Extreme Pro is the ruggedized competitor to the Samsung T7 Shield — headlining a 5-year warranty where Samsung offers 3, and including both USB-C-to-C and USB-C-to-A cables.

IP55 dust and water resistant
Aluminum chassis with rubber bumper
5-year warranty
Check on Amazon →

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
SanDisk Extreme Pro Portable 1TB
SSK PM510 USB4 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)
600 TB
600 TB
Warranty
5 Years ✓
3 Years
Score
9.1/10 ✓
8.6/10
Total Wins
2 wins
2 wins

Frequently Asked Questions

Which is better, SanDisk Extreme Pro Portable 1TB or SSK PM510 USB4 1TB?
The SanDisk Extreme Pro Portable 1TB scores 9.1/10 compared to 8.6/10 for the SSK PM510 USB4 1TB. Our expert analysis favors the SanDisk Extreme Pro Portable 1TB for its superior value.
What's the difference between SanDisk Extreme Pro Portable 1TB and SSK PM510 USB4 1TB?
The key differences: The SanDisk Extreme Pro Portable 1TB offers 1,050 MB/s reads vs 3,200 MB/s for the SSK PM510 USB4 1TB. Capacity options differ: SanDisk Extreme Pro Portable 1TB is 1TB while SSK PM510 USB4 1TB is 1TB. The SanDisk Extreme Pro Portable 1TB uses USB 3.2 Gen 2 while the SSK PM510 USB4 1TB uses USB4.
Which is faster, SanDisk Extreme Pro Portable 1TB or SSK PM510 USB4 1TB?
The SSK PM510 USB4 1TB is faster with 3,200 MB/s read speeds compared to 1,050 MB/s for the SanDisk Extreme Pro Portable 1TB. That's a 205% speed advantage.
Which has better value, SanDisk Extreme Pro Portable 1TB or SSK PM510 USB4 1TB?
The SanDisk Extreme Pro Portable 1TB scores higher (9.1 vs 8.6/10), indicating better overall value in our evaluation. Check both models on the retailer's site for the latest details.

More Comparisons

SanDisk Extreme Pro Portable 1TB vs Samsung T9 2TB → SSK PM510 USB4 1TB vs Samsung T9 2TB →
SanDisk Extreme Pro Portable 1TB vs Samsung T9 Portable SSD → SSK PM510 USB4 1TB vs Samsung T9 Portable SSD →
SanDisk Extreme Pro Portable 1TB vs Crucial X10 Pro 2TB → SSK PM510 USB4 1TB vs Crucial X10 Pro 2TB →
SanDisk Extreme Pro Portable 1TB vs Samsung T7 4TB → SSK PM510 USB4 1TB vs Samsung T7 4TB →