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Portable SSDs

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Lexar SL100 Pro Portable 1TB vs SanDisk Extreme Pro Portable 4TB — Which Portable SSD Is Faster & Better Value?

Compare Lexar SL100 Pro Portable 1TB and SanDisk Extreme Pro Portable 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.

Lexar

Lexar SL100 Pro Portable 1TB
7.5/10

A brushed-aluminum portable SSD the size of a credit card -- one of the smallest 1TB Gen 2 SSDs in retail. Buy it for the form factor; the 950 MB/s rating undershoots the full 1050 Gen 2 ceiling.

Brushed-aluminum case
950 MB/s read
Tiny credit-card footprint
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Our Pick

SanDisk

SanDisk Extreme Pro Portable 4TB
9.3/10

The 4TB Extreme Pro is the largest portable SSD in SanDisk's ruggedized line and a direct competitor to the Samsung T7 Shield 4TB. The 5-year warranty plus IP55 rubber armor are distinguishing factors vs other 4TB portable SSDs — most peers only offer 3.

4TB @ IP55 rugged
5-year warranty
Both cables in box
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Spec Comparison

Spec
Lexar SL100 Pro Portable 1TB
SanDisk Extreme Pro Portable 4TB
Read Speed
950 MB/s
1.1 GB/s ✓
Write Speed
950 MB/s
1.0 GB/s ✓
Capacity
1 TB
4 TB ✓
Interface
USB 3.2 Gen 2
USB 3.2 Gen 2
Endurance (TBW)
600 TB
2,400 TB ✓
Warranty
3 Years
5 Years ✓
Score
7.5/10
9.3/10 ✓
Total Wins
0 wins
6 wins

Frequently Asked Questions

Which is better, Lexar SL100 Pro Portable 1TB or SanDisk Extreme Pro Portable 4TB?
The SanDisk Extreme Pro Portable 4TB scores 9.3/10 compared to 7.5/10 for the Lexar SL100 Pro Portable 1TB. Our expert analysis favors the SanDisk Extreme Pro Portable 4TB for its superior speed.
What's the difference between Lexar SL100 Pro Portable 1TB and SanDisk Extreme Pro Portable 4TB?
The key differences: The Lexar SL100 Pro Portable 1TB offers 950 MB/s reads vs 1,050 MB/s for the SanDisk Extreme Pro Portable 4TB. Capacity options differ: Lexar SL100 Pro Portable 1TB is 1TB while SanDisk Extreme Pro Portable 4TB is 4TB. The Lexar SL100 Pro Portable 1TB uses USB 3.2 Gen 2 while the SanDisk Extreme Pro Portable 4TB uses USB 3.2 Gen 2.
Which is faster, Lexar SL100 Pro Portable 1TB or SanDisk Extreme Pro Portable 4TB?
The SanDisk Extreme Pro Portable 4TB is faster with 1,050 MB/s read speeds compared to 950 MB/s for the Lexar SL100 Pro Portable 1TB. That's a 11% speed advantage.
Which has better value, Lexar SL100 Pro Portable 1TB or SanDisk Extreme Pro Portable 4TB?
The SanDisk Extreme Pro Portable 4TB scores higher (9.3 vs 7.5/10), indicating better overall value in our evaluation. Check both models on the retailer's site for the latest details.

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