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Portable SSDs

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Lexar SL100 Pro Portable 2TB vs SanDisk Extreme Pro Portable 4TB

Compare Lexar SL100 Pro Portable 2TB and SanDisk Extreme Pro Portable 4TB side by side. Both are 2TB 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 2TB
7.6/10

The 2TB SL100 Pro in the same brushed-aluminum credit-card footprint of the 1TB. Famously pocketable but only marginally faster on sustained writes thanks to the larger SLC cache.

2TB credit-card footprint
950 MB/s read
Aluminum body
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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 2TB
SanDisk Extreme Pro Portable 4TB
Read Speed
950 MB/s
1.1 GB/s ✓
Write Speed
950 MB/s
1.0 GB/s ✓
Capacity
2 TB
4 TB ✓
Interface
USB 3.2 Gen 2
USB 3.2 Gen 2
Endurance (TBW)
1,200 TB
2,400 TB ✓
Warranty
3 Years
5 Years ✓
Score
7.6/10
9.3/10 ✓
Total Wins
0 wins
6 wins

Frequently Asked Questions

Which is better, Lexar SL100 Pro Portable 2TB or SanDisk Extreme Pro Portable 4TB?
The SanDisk Extreme Pro Portable 4TB scores 9.3/10 compared to 7.6/10 for the Lexar SL100 Pro Portable 2TB. Our expert analysis favors the SanDisk Extreme Pro Portable 4TB for its superior speed.
What's the difference between Lexar SL100 Pro Portable 2TB and SanDisk Extreme Pro Portable 4TB?
The key differences: The Lexar SL100 Pro Portable 2TB offers 950 MB/s reads vs 1,050 MB/s for the SanDisk Extreme Pro Portable 4TB. Capacity options differ: Lexar SL100 Pro Portable 2TB is 2TB while SanDisk Extreme Pro Portable 4TB is 4TB. The Lexar SL100 Pro Portable 2TB 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 2TB 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 2TB. That's a 11% speed advantage.
Which has better value, Lexar SL100 Pro Portable 2TB or SanDisk Extreme Pro Portable 4TB?
The SanDisk Extreme Pro Portable 4TB scores higher (9.3 vs 7.6/10), indicating better overall value in our evaluation. Check both models on the retailer's site for the latest details.

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