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Crucial X6 1TB vs SanDisk Extreme Pro 4TB — Which External SSD Is Faster & Better Value?

Compare Crucial X6 1TB and SanDisk Extreme Pro 4TB 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.

Crucial

Crucial X6 1TB

7.8/10

The X6 is Crucial's budget Gen 2 line — half the speed of the X9 Pro at typically half the price. A sensible choice for game-library expansion on PS5/Xbox or as a Time Machine drive, where sustained write speed matters far less than capacity-per-dollar.

800 MB/s over Gen 2

Cheapest per-TB of Crucial's portable line

Compatible with PS5/Xbox expandable storage

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Our Pick

SanDisk

SanDisk Extreme Pro 4TB

9.2/10

Extreme 4TB portable SSD with 2000MB/s speeds and IP55 rating. The ultimate high-capacity drive for professionals on the go.

4TB capacity with 2000MB/s read and write

IP55 water and dust resistance

5-year warranty

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Spec Comparison

Spec

Crucial X6 1TB

SanDisk Extreme Pro 4TB

Read Speed

800 MB/s

2.0 GB/s ✓

Write Speed

800 MB/s

2.0 GB/s ✓

Capacity

1 TB

4 TB ✓

Interface

USB 3.2 Gen 2

USB 3.2 Gen 2x2

Endurance (TBW)

600 TB

1,200 TB ✓

Warranty

3 Years

5 Years ✓

Score

7.8/10

9.2/10 ✓

Total Wins

0 wins

6 wins

Frequently Asked Questions

Which is better, Crucial X6 1TB or SanDisk Extreme Pro 4TB?

The SanDisk Extreme Pro 4TB scores 9.2/10 compared to 7.8/10 for the Crucial X6 1TB. Our expert analysis favors the SanDisk Extreme Pro 4TB for its superior speed.

What's the difference between Crucial X6 1TB and SanDisk Extreme Pro 4TB?

The key differences: The Crucial X6 1TB offers 800 MB/s reads vs 2,000 MB/s for the SanDisk Extreme Pro 4TB. Capacity options differ: Crucial X6 1TB is 1TB while SanDisk Extreme Pro 4TB is 4TB. The Crucial X6 1TB uses USB 3.2 Gen 2 while the SanDisk Extreme Pro 4TB uses USB 3.2 Gen 2x2.

Which is faster, Crucial X6 1TB or SanDisk Extreme Pro 4TB?

The SanDisk Extreme Pro 4TB is faster with 2,000 MB/s read speeds compared to 800 MB/s for the Crucial X6 1TB. That's a 150% speed advantage.

Which has better value, Crucial X6 1TB or SanDisk Extreme Pro 4TB?

The SanDisk Extreme Pro 4TB scores higher (9.2 vs 7.8/10), indicating better overall value in our evaluation. Check both models on the retailer's site for the latest details.

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