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.

ADATA SE800 1TB vs Corsair EX400U 1TB — Which External SSD Is Faster & Better Value?

Compare ADATA SE800 1TB and Corsair EX400U 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.

ADATA

ADATA SE800 1TB
7.4/10

A compact 1050-class Gen 2 portable at a budget price point. The SE800 is one of the cheapest brand-name 1TB external SSDs in retail — the cost-cutting shows in the plastic body and shorter warranty.

1000 MB/s read
Budget pricing
Tiny form factor
Check on Amazon →
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 →

Spec Comparison

Spec
ADATA SE800 1TB
Corsair EX400U 1TB
Read Speed
1.0 GB/s
3.3 GB/s ✓
Write Speed
950 MB/s
3.0 GB/s ✓
Capacity
1 TB
1 TB
Interface
USB 3.2 Gen 2
USB4
Endurance (TBW)
600 TB
600 TB
Warranty
3 Years
5 Years ✓
Score
7.4/10
9.0/10 ✓
Total Wins
0 wins
4 wins

Frequently Asked Questions

Which is better, ADATA SE800 1TB or Corsair EX400U 1TB?
The Corsair EX400U 1TB scores 9.0/10 compared to 7.4/10 for the ADATA SE800 1TB. Our expert analysis favors the Corsair EX400U 1TB for its superior speed.
What's the difference between ADATA SE800 1TB and Corsair EX400U 1TB?
The key differences: The ADATA SE800 1TB offers 1,000 MB/s reads vs 3,300 MB/s for the Corsair EX400U 1TB. Capacity options differ: ADATA SE800 1TB is 1TB while Corsair EX400U 1TB is 1TB. The ADATA SE800 1TB uses USB 3.2 Gen 2 while the Corsair EX400U 1TB uses USB4.
Which is faster, ADATA SE800 1TB or Corsair EX400U 1TB?
The Corsair EX400U 1TB is faster with 3,300 MB/s read speeds compared to 1,000 MB/s for the ADATA SE800 1TB. That's a 230% speed advantage.
Which has better value, ADATA SE800 1TB or Corsair EX400U 1TB?
The Corsair EX400U 1TB scores higher (9.0 vs 7.4/10), indicating better overall value in our evaluation. Check both models on the retailer's site for the latest details.

More Comparisons

ADATA SE800 1TB vs Samsung T9 2TB → Corsair EX400U 1TB vs Samsung T9 2TB →
ADATA SE800 1TB vs Samsung T9 Portable SSD → Corsair EX400U 1TB vs Samsung T9 Portable SSD →
ADATA SE800 1TB vs Crucial X10 Pro 2TB → Corsair EX400U 1TB vs Crucial X10 Pro 2TB →
ADATA SE800 1TB vs Samsung T7 4TB → Corsair EX400U 1TB vs Samsung T7 4TB →