Skip to main content
Portable 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.

Samsung T9 Portable 4TB vs Seagate One Touch SSD Portable 500GB

Compare Samsung T9 Portable 4TB and Seagate One Touch SSD Portable 500GB side by side. Both are 4TB USB 3.2 Gen 2x2 external SSDs, but they differ in speed, design, and value. Here's how they stack up.

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
Check on Amazon →

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
Check on Amazon →

Spec Comparison

Spec
Samsung T9 Portable 4TB
Seagate One Touch SSD Portable 500GB
Read Speed
2.0 GB/s ✓
1.0 GB/s
Write Speed
2.0 GB/s ✓
1.0 GB/s
Capacity
4 TB ✓
500 GB
Interface
USB 3.2 Gen 2x2
USB 3.2 Gen 2
Endurance (TBW)
2,400 TB ✓
300 TB
Warranty
5 Years ✓
3 Years
Score
9.6/10 ✓
7.5/10
Total Wins
6 wins
0 wins

Frequently Asked Questions

Which is better, Samsung T9 Portable 4TB or Seagate One Touch SSD Portable 500GB?
The Samsung T9 Portable 4TB scores 9.6/10 compared to 7.5/10 for the Seagate One Touch SSD Portable 500GB. Our expert analysis favors the Samsung T9 Portable 4TB for its superior speed.
What's the difference between Samsung T9 Portable 4TB and Seagate One Touch SSD Portable 500GB?
The key differences: The Samsung T9 Portable 4TB offers 2,000 MB/s reads vs 1,030 MB/s for the Seagate One Touch SSD Portable 500GB. Capacity options differ: Samsung T9 Portable 4TB is 4TB while Seagate One Touch SSD Portable 500GB is 500GB. The Samsung T9 Portable 4TB uses USB 3.2 Gen 2x2 while the Seagate One Touch SSD Portable 500GB uses USB 3.2 Gen 2.
Which is faster, Samsung T9 Portable 4TB or Seagate One Touch SSD Portable 500GB?
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 500GB. That's a 94% speed advantage.
Which has better value, Samsung T9 Portable 4TB or Seagate One Touch SSD Portable 500GB?
The Samsung T9 Portable 4TB scores higher (9.6 vs 7.5/10), indicating better overall value in our evaluation. Check both models on the retailer's site for the latest details.

More Comparisons

Samsung T9 Portable 4TB vs Samsung T9 Portable SSD → Seagate One Touch SSD Portable 500GB vs Samsung T9 Portable SSD →
Samsung T9 Portable 4TB vs Crucial X10 Pro Portable 4TB → Seagate One Touch SSD Portable 500GB vs Crucial X10 Pro Portable 4TB →
Samsung T9 Portable 4TB vs Sabrent Rocket Nano V2 → Seagate One Touch SSD Portable 500GB vs Sabrent Rocket Nano V2 →
Samsung T9 Portable 4TB vs Samsung T9 Portable 2TB → Seagate One Touch SSD Portable 500GB vs Samsung T9 Portable 2TB →