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External SSDs

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Crucial X6 4TB vs SanDisk Extreme Portable 1TB

Compare Crucial X6 4TB and SanDisk Extreme Portable 1TB 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 4TB
8.2/10

A 4TB external at the X6's price is closer to spinning-rust economics than to typical SSD pricing. The 800 MB/s cap doesn't matter when the use case is video archive or photo-library cold storage — this drive is bought for capacity first, speed second.

4TB at budget-friendly price
PS5/Xbox cold-library compatible
Cool-running
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Our Pick

SanDisk

SanDisk Extreme Portable 1TB
8.5/10

The non-Pro Extreme is the lower-cost sibling — same 1050 MB/s rated read and IP55 rugged body, but writes top out well below Extreme Pro on sustained workloads. A solid buy when the write-speed gap doesn't matter (game consoles, file transfer, backup) but the rugged rating does.

IP55 rugged body
Same 1050 read as Extreme Pro
Cheaper than Pro by a wide margin
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Spec Comparison

Spec
Crucial X6 4TB
SanDisk Extreme Portable 1TB
Read Speed
800 MB/s
1.1 GB/s ✓
Write Speed
800 MB/s
1.0 GB/s ✓
Capacity
4 TB ✓
1 TB
Interface
USB 3.2 Gen 2
USB 3.2 Gen 2
Endurance (TBW)
2,400 TB ✓
600 TB
Warranty
3 Years
3 Years
Score
8.2/10
8.5/10 ✓
Total Wins
2 wins
3 wins

Frequently Asked Questions

Which is better, Crucial X6 4TB or SanDisk Extreme Portable 1TB?
The SanDisk Extreme Portable 1TB scores 8.5/10 compared to 8.2/10 for the Crucial X6 4TB. Our expert analysis favors the SanDisk Extreme Portable 1TB for its superior speed.
What's the difference between Crucial X6 4TB and SanDisk Extreme Portable 1TB?
The key differences: The Crucial X6 4TB offers 800 MB/s reads vs 1,050 MB/s for the SanDisk Extreme Portable 1TB. Capacity options differ: Crucial X6 4TB is 4TB while SanDisk Extreme Portable 1TB is 1TB. The Crucial X6 4TB uses USB 3.2 Gen 2 while the SanDisk Extreme Portable 1TB uses USB 3.2 Gen 2.
Which is faster, Crucial X6 4TB or SanDisk Extreme Portable 1TB?
The SanDisk Extreme Portable 1TB is faster with 1,050 MB/s read speeds compared to 800 MB/s for the Crucial X6 4TB. That's a 31% speed advantage.
Which has better value, Crucial X6 4TB or SanDisk Extreme Portable 1TB?
The SanDisk Extreme Portable 1TB scores higher (8.5 vs 8.2/10), indicating better overall value in our evaluation. Check both models on the retailer's site for the latest details.

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