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Portable SSDs

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Seagate One Touch SSD Portable 2TB vs Samsung T9 Portable 4TB

Compare Seagate One Touch SSD Portable 2TB and Samsung T9 Portable 4TB side by side. Both are 2TB 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 2TB
7.8/10

The 2TB One Touch is the realistic minimum for game-library cold storage and Time Machine backups at typical Seagate sale pricing. The larger die stack holds the rated 1030 MB/s write distinctly longer than the 1TB variant before SLC cache exhausts.

1030 MB/s rated
Both cables
Rescue data recovery plan
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Our Pick

Samsung

Samsung T9 Portable 4TB
9.6/10

The 4TB T9 portable is genuinely rare — most 4TB external SSDs cap at Gen 2 (10Gbps) speeds. The T9 4TB holds 2000 MB/s sustained reads AND writes at 4TB. The right drive for working video pros who genuinely travel with 4TB of working RAW footage and need Gen 2x2 link speeds.

Gen 2x2 + 4TB
2400 TBW endurance
5-year warranty
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Spec Comparison

Spec
Seagate One Touch SSD Portable 2TB
Samsung T9 Portable 4TB
Read Speed
1.0 GB/s
2.0 GB/s ✓
Write Speed
1.0 GB/s
2.0 GB/s ✓
Capacity
2 TB
4 TB ✓
Interface
USB 3.2 Gen 2
USB 3.2 Gen 2x2
Endurance (TBW)
1,200 TB
2,400 TB ✓
Warranty
3 Years
5 Years ✓
Score
7.8/10
9.6/10 ✓
Total Wins
0 wins
6 wins

Frequently Asked Questions

Which is better, Seagate One Touch SSD Portable 2TB or Samsung T9 Portable 4TB?
The Samsung T9 Portable 4TB scores 9.6/10 compared to 7.8/10 for the Seagate One Touch SSD Portable 2TB. Our expert analysis favors the Samsung T9 Portable 4TB for its superior speed.
What's the difference between Seagate One Touch SSD Portable 2TB and Samsung T9 Portable 4TB?
The key differences: The Seagate One Touch SSD Portable 2TB offers 1,030 MB/s reads vs 2,000 MB/s for the Samsung T9 Portable 4TB. Capacity options differ: Seagate One Touch SSD Portable 2TB is 2TB while Samsung T9 Portable 4TB is 4TB. The Seagate One Touch SSD Portable 2TB uses USB 3.2 Gen 2 while the Samsung T9 Portable 4TB uses USB 3.2 Gen 2x2.
Which is faster, Seagate One Touch SSD Portable 2TB or Samsung T9 Portable 4TB?
The Samsung T9 Portable 4TB is faster with 2,000 MB/s read speeds compared to 1,030 MB/s for the Seagate One Touch SSD Portable 2TB. That's a 94% speed advantage.
Which has better value, Seagate One Touch SSD Portable 2TB or Samsung T9 Portable 4TB?
The Samsung T9 Portable 4TB scores higher (9.6 vs 7.8/10), indicating better overall value in our evaluation. Check both models on the retailer's site for the latest details.

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