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.

Corsair EX400U 1TB vs Seagate One Touch SSD 500GB

Compare Corsair EX400U 1TB and Seagate One Touch SSD 500GB side by side. Both are 1TB USB4 external SSDs, but they differ in speed, design, and value. Here's how they stack up.

Our Pick

Corsair

Corsair EX400U 1TB
9.0/10

A 1TB USB4 portable — 3300 MB/s read on a Thunderbolt 4 / USB4 host. The EX400U is the rare USB4 drive that supports the full 40Gbps link (not all USB4 drives do). 5-year warranty is best-in-class for the speed tier.

USB4 3300 MB/s read
5-year warranty
Full 40Gbps USB4 link
Check on Amazon →

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 →

Spec Comparison

Spec
Corsair EX400U 1TB
Seagate One Touch SSD 500GB
Read Speed
3.3 GB/s ✓
1.0 GB/s
Write Speed
3.0 GB/s ✓
1.0 GB/s
Capacity
1 TB ✓
500 GB
Interface
USB4
USB 3.2 Gen 2
Endurance (TBW)
600 TB ✓
300 TB
Warranty
5 Years ✓
3 Years
Score
9.0/10 ✓
7.6/10
Total Wins
6 wins
0 wins

Frequently Asked Questions

Which is better, Corsair EX400U 1TB or Seagate One Touch SSD 500GB?
The Corsair EX400U 1TB scores 9.0/10 compared to 7.6/10 for the Seagate One Touch SSD 500GB. Our expert analysis favors the Corsair EX400U 1TB for its superior speed.
What's the difference between Corsair EX400U 1TB and Seagate One Touch SSD 500GB?
The key differences: The Corsair EX400U 1TB offers 3,300 MB/s reads vs 1,030 MB/s for the Seagate One Touch SSD 500GB. Capacity options differ: Corsair EX400U 1TB is 1TB while Seagate One Touch SSD 500GB is 500GB. The Corsair EX400U 1TB uses USB4 while the Seagate One Touch SSD 500GB uses USB 3.2 Gen 2.
Which is faster, Corsair EX400U 1TB or Seagate One Touch SSD 500GB?
The Corsair EX400U 1TB is faster with 3,300 MB/s read speeds compared to 1,030 MB/s for the Seagate One Touch SSD 500GB. That's a 220% speed advantage.
Which has better value, Corsair EX400U 1TB or Seagate One Touch SSD 500GB?
The Corsair EX400U 1TB scores higher (9.0 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

Corsair EX400U 1TB vs Samsung T9 2TB → Seagate One Touch SSD 500GB vs Samsung T9 2TB →
Corsair EX400U 1TB vs Samsung T9 Portable SSD → Seagate One Touch SSD 500GB vs Samsung T9 Portable SSD →
Corsair EX400U 1TB vs Crucial X10 Pro 2TB → Seagate One Touch SSD 500GB vs Crucial X10 Pro 2TB →
Corsair EX400U 1TB vs Samsung T7 4TB → Seagate One Touch SSD 500GB vs Samsung T7 4TB →