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Portable SSDs

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Lexar SL660 Portable 1TB vs Transcend ESD310C Portable 2TB

Compare Lexar SL660 Portable 1TB and Transcend ESD310C Portable 2TB side by side. Both are 1TB USB 3.2 Gen 2x2 external SSDs, but they differ in speed, design, and value. Here's how they stack up.

Our Pick

Lexar

Lexar SL660 Portable 1TB
8.1/10

A 1TB Gen 2x2 portable with an aluminum body and an RGB-lit Logo -- the RGB is divisive but the performance is real. Build quality distinguishes the SL660 from cheaper Gen 2x2 peers like the Patriot Evlvr.

Gen 2x2 2000/2000 MB/s
Aluminum body
3-year warranty
Check on Amazon →

Transcend

Transcend ESD310C Portable 2TB
7.7/10

The 2TB ESD310C keeps the same tiny plastic credit-card footprint of the 1TB -- Transcend fits an unusually large stack in an unusually small case. The 2TB cache budget also holds the 950 MB/s write past 200GB on long transfers.

1050/950 MB/s
Tiny footprint
2400 TBW endurance
Check on Amazon →

Spec Comparison

Spec
Lexar SL660 Portable 1TB
Transcend ESD310C Portable 2TB
Read Speed
2.0 GB/s ✓
1.1 GB/s
Write Speed
2.0 GB/s ✓
950 MB/s
Capacity
1 TB
2 TB ✓
Interface
USB 3.2 Gen 2x2
USB 3.2 Gen 2
Endurance (TBW)
600 TB
1,200 TB ✓
Warranty
3 Years
3 Years
Score
8.1/10 ✓
7.7/10
Total Wins
3 wins
2 wins

Frequently Asked Questions

Which is better, Lexar SL660 Portable 1TB or Transcend ESD310C Portable 2TB?
The Lexar SL660 Portable 1TB scores 8.1/10 compared to 7.7/10 for the Transcend ESD310C Portable 2TB. Our expert analysis favors the Lexar SL660 Portable 1TB for its superior speed.
What's the difference between Lexar SL660 Portable 1TB and Transcend ESD310C Portable 2TB?
The key differences: The Lexar SL660 Portable 1TB offers 2,000 MB/s reads vs 1,050 MB/s for the Transcend ESD310C Portable 2TB. Capacity options differ: Lexar SL660 Portable 1TB is 1TB while Transcend ESD310C Portable 2TB is 2TB. The Lexar SL660 Portable 1TB uses USB 3.2 Gen 2x2 while the Transcend ESD310C Portable 2TB uses USB 3.2 Gen 2.
Which is faster, Lexar SL660 Portable 1TB or Transcend ESD310C Portable 2TB?
The Lexar SL660 Portable 1TB is faster with 2,000 MB/s read speeds compared to 1,050 MB/s for the Transcend ESD310C Portable 2TB. That's a 90% speed advantage.
Which has better value, Lexar SL660 Portable 1TB or Transcend ESD310C Portable 2TB?
The Lexar SL660 Portable 1TB scores higher (8.1 vs 7.7/10), indicating better overall value in our evaluation. Check both models on the retailer's site for the latest details.

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