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Portable SSDs

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Crucial X6 Portable 4TB vs Crucial X8 Portable 2TB — Which Portable SSD Is Faster & Better Value?

Compare Crucial X6 Portable 4TB and Crucial X8 Portable 2TB side by side. Both are 4TB USB 3.2 Gen 2 external SSDs, but they differ in speed, design, and value. Here's how they stack up.

Crucial

Crucial X6 Portable 4TB
8.0/10

A 4TB portable at the X6's budget price is closer to spinning-rust economics than SSD. The 800 MB/s ceiling doesn't matter for the use case — the entire point is capacious portable cold library overflow for PS5, Xbox, or photo archive, not peak throughput.

4TB at budget pricing
PS5/Xbox cold-library friendly
Cool operation
Check on Amazon →
Our Pick

Crucial

Crucial X8 Portable 2TB
8.4/10

A 2TB solid-aluminum previous-gen Crucial X8 portable — often discounted during clearance cycles. Buy when the savings over the X9 Pro 2TB are real (30%+); ignore when pricing is competitive with the X9 Pro (which has the 5-year warranty).

1050/1000 MB/s
Aluminum unibody
Often discounted
Check on Amazon →

Spec Comparison

Spec
Crucial X6 Portable 4TB
Crucial X8 Portable 2TB
Read Speed
800 MB/s
1.1 GB/s ✓
Write Speed
800 MB/s
1.0 GB/s ✓
Capacity
4 TB ✓
2 TB
Interface
USB 3.2 Gen 2
USB 3.2 Gen 2
Endurance (TBW)
2,400 TB ✓
1,200 TB
Warranty
3 Years
3 Years
Score
8.0/10
8.4/10 ✓
Total Wins
2 wins
3 wins

Frequently Asked Questions

Which is better, Crucial X6 Portable 4TB or Crucial X8 Portable 2TB?
The Crucial X8 Portable 2TB scores 8.4/10 compared to 8.0/10 for the Crucial X6 Portable 4TB. Our expert analysis favors the Crucial X8 Portable 2TB for its superior speed.
What's the difference between Crucial X6 Portable 4TB and Crucial X8 Portable 2TB?
The key differences: The Crucial X6 Portable 4TB offers 800 MB/s reads vs 1,050 MB/s for the Crucial X8 Portable 2TB. Capacity options differ: Crucial X6 Portable 4TB is 4TB while Crucial X8 Portable 2TB is 2TB. The Crucial X6 Portable 4TB uses USB 3.2 Gen 2 while the Crucial X8 Portable 2TB uses USB 3.2 Gen 2.
Which is faster, Crucial X6 Portable 4TB or Crucial X8 Portable 2TB?
The Crucial X8 Portable 2TB is faster with 1,050 MB/s read speeds compared to 800 MB/s for the Crucial X6 Portable 4TB. That's a 31% speed advantage.
Which has better value, Crucial X6 Portable 4TB or Crucial X8 Portable 2TB?
The Crucial X8 Portable 2TB scores higher (8.4 vs 8.0/10), indicating better overall value in our evaluation. Check both models on the retailer's site for the latest details.

More Comparisons

Crucial X6 Portable 4TB vs Samsung T9 Portable SSD → Crucial X8 Portable 2TB vs Samsung T9 Portable SSD →
Crucial X6 Portable 4TB vs Samsung T9 Portable 4TB → Crucial X8 Portable 2TB vs Samsung T9 Portable 4TB →
Crucial X6 Portable 4TB vs Crucial X10 Pro Portable 4TB → Crucial X8 Portable 2TB vs Crucial X10 Pro Portable 4TB →
Crucial X6 Portable 4TB vs Sabrent Rocket Nano V2 → Crucial X8 Portable 2TB vs Sabrent Rocket Nano V2 →