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Portable SSDs

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Lexar SL660 Portable 2TB vs Transcend ESD310C Portable 1TB

Compare Lexar SL660 Portable 2TB and Transcend ESD310C Portable 1TB side by side. Both are 2TB 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 2TB
8.2/10

The 2TB SL660 doubles SLC cache budget over the 1TB. RGB and aluminum body preserved -- a competitive Gen 2x2 2TB at moderate pricing, comparable with the Kingston XS2000 2TB and Patriot Evlvr 2TB.

Gen 2x2 2000 MB/s
2TB storage
Aluminum body
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Transcend

Transcend ESD310C Portable 1TB
7.6/10

A tiny 1050-class Gen 2 portable from a long-established memory brand. The ESD310C is among the smallest 1TB Gen 2 SSDs in retail -- small enough to be lost in a bag. Buy it for the form factor over sustained performance.

1050/950 MB/s
Tiny credit-card footprint
3-year warranty
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Spec Comparison

Spec
Lexar SL660 Portable 2TB
Transcend ESD310C Portable 1TB
Read Speed
2.0 GB/s ✓
1.1 GB/s
Write Speed
2.0 GB/s ✓
950 MB/s
Capacity
2 TB ✓
1 TB
Interface
USB 3.2 Gen 2x2
USB 3.2 Gen 2
Endurance (TBW)
1,200 TB ✓
600 TB
Warranty
3 Years
3 Years
Score
8.2/10 ✓
7.6/10
Total Wins
5 wins
0 wins

Frequently Asked Questions

Which is better, Lexar SL660 Portable 2TB or Transcend ESD310C Portable 1TB?
The Lexar SL660 Portable 2TB scores 8.2/10 compared to 7.6/10 for the Transcend ESD310C Portable 1TB. Our expert analysis favors the Lexar SL660 Portable 2TB for its superior speed.
What's the difference between Lexar SL660 Portable 2TB and Transcend ESD310C Portable 1TB?
The key differences: The Lexar SL660 Portable 2TB offers 2,000 MB/s reads vs 1,050 MB/s for the Transcend ESD310C Portable 1TB. Capacity options differ: Lexar SL660 Portable 2TB is 2TB while Transcend ESD310C Portable 1TB is 1TB. The Lexar SL660 Portable 2TB uses USB 3.2 Gen 2x2 while the Transcend ESD310C Portable 1TB uses USB 3.2 Gen 2.
Which is faster, Lexar SL660 Portable 2TB or Transcend ESD310C Portable 1TB?
The Lexar SL660 Portable 2TB is faster with 2,000 MB/s read speeds compared to 1,050 MB/s for the Transcend ESD310C Portable 1TB. That's a 90% speed advantage.
Which has better value, Lexar SL660 Portable 2TB or Transcend ESD310C Portable 1TB?
The Lexar SL660 Portable 2TB scores higher (8.2 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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