Skip to main content
Portable SSDs

As an Amazon Associate I earn from qualifying purchases. We may earn a commission from qualifying purchases made through links on this page. Prices and availability are subject to change. We are reader-supported and independent — our rankings are based on an objective scoring rubric, not sponsorship.

Lexar SL100 Pro Portable 1TB vs WD My Passport SSD Portable 4TB

Compare Lexar SL100 Pro Portable 1TB and WD My Passport SSD 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
Check on Amazon →
Our Pick

Western Digital

WD My Passport SSD Portable 4TB
8.7/10

A 4TB My Passport SSD portable — same physical package as the 1TB/2TB but with the 4TB die stack. The biggest single-portable WD ships and one of the few 4TB portable SSDs at retail, period. Compares closely with the Samsung T7 4TB.

4TB slim form factor
2400 TBW endurance
AES hardware encryption
Check on Amazon →

Spec Comparison

Spec
Lexar SL100 Pro Portable 1TB
WD My Passport SSD 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
3 Years
Score
7.5/10
8.7/10 ✓
Total Wins
0 wins
5 wins

Frequently Asked Questions

Which is better, Lexar SL100 Pro Portable 1TB or WD My Passport SSD Portable 4TB?
The WD My Passport SSD Portable 4TB scores 8.7/10 compared to 7.5/10 for the Lexar SL100 Pro Portable 1TB. Our expert analysis favors the WD My Passport SSD Portable 4TB for its superior speed.
What's the difference between Lexar SL100 Pro Portable 1TB and WD My Passport SSD Portable 4TB?
The key differences: The Lexar SL100 Pro Portable 1TB offers 950 MB/s reads vs 1,050 MB/s for the WD My Passport SSD Portable 4TB. Capacity options differ: Lexar SL100 Pro Portable 1TB is 1TB while WD My Passport SSD Portable 4TB is 4TB. The Lexar SL100 Pro Portable 1TB uses USB 3.2 Gen 2 while the WD My Passport SSD Portable 4TB uses USB 3.2 Gen 2.
Which is faster, Lexar SL100 Pro Portable 1TB or WD My Passport SSD Portable 4TB?
The WD My Passport SSD 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 WD My Passport SSD Portable 4TB?
The WD My Passport SSD Portable 4TB scores higher (8.7 vs 7.5/10), indicating better overall value in our evaluation. Check both models on the retailer's site for the latest details.

More Comparisons

Lexar SL100 Pro Portable 1TB vs Samsung T9 Portable SSD → WD My Passport SSD Portable 4TB vs Samsung T9 Portable SSD →
Lexar SL100 Pro Portable 1TB vs Samsung T9 Portable 4TB → WD My Passport SSD Portable 4TB vs Samsung T9 Portable 4TB →
Lexar SL100 Pro Portable 1TB vs Crucial X10 Pro Portable 4TB → WD My Passport SSD Portable 4TB vs Crucial X10 Pro Portable 4TB →
Lexar SL100 Pro Portable 1TB vs Sabrent Rocket Nano V2 → WD My Passport SSD Portable 4TB vs Sabrent Rocket Nano V2 →