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Portable SSDs

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OWC Envoy Pro FX Portable 4TB vs Transcend ESD310C Portable 2TB

Compare OWC Envoy Pro FX Portable 4TB and Transcend ESD310C Portable 2TB side by side. Both are 4TB Thunderbolt 3 external SSDs, but they differ in speed, design, and value. Here's how they stack up.

Our Pick

OWC

OWC Envoy Pro FX Portable 4TB
8.9/10

4TB of Thunderbolt 3 in an aluminum unibody barely larger than the 1TB. The Envoy Pro FX 4TB is a niche-of-one -- buyers typically pay the premium for 6K/8K video editing workflows where sustained 2800 MB/s transfers plus 4TB of room actually matter.

Thunderbolt 3 + 4TB
Aluminum unibody
2800 MB/s sustained
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
OWC Envoy Pro FX Portable 4TB
Transcend ESD310C Portable 2TB
Read Speed
2.8 GB/s ✓
1.1 GB/s
Write Speed
2.8 GB/s ✓
950 MB/s
Capacity
4 TB ✓
2 TB
Interface
Thunderbolt 3
USB 3.2 Gen 2
Endurance (TBW)
2,400 TB ✓
1,200 TB
Warranty
3 Years
3 Years
Score
8.9/10 ✓
7.7/10
Total Wins
5 wins
0 wins

Frequently Asked Questions

Which is better, OWC Envoy Pro FX Portable 4TB or Transcend ESD310C Portable 2TB?
The OWC Envoy Pro FX Portable 4TB scores 8.9/10 compared to 7.7/10 for the Transcend ESD310C Portable 2TB. Our expert analysis favors the OWC Envoy Pro FX Portable 4TB for its superior speed.
What's the difference between OWC Envoy Pro FX Portable 4TB and Transcend ESD310C Portable 2TB?
The key differences: The OWC Envoy Pro FX Portable 4TB offers 2,800 MB/s reads vs 1,050 MB/s for the Transcend ESD310C Portable 2TB. Capacity options differ: OWC Envoy Pro FX Portable 4TB is 4TB while Transcend ESD310C Portable 2TB is 2TB. The OWC Envoy Pro FX Portable 4TB uses Thunderbolt 3 while the Transcend ESD310C Portable 2TB uses USB 3.2 Gen 2.
Which is faster, OWC Envoy Pro FX Portable 4TB or Transcend ESD310C Portable 2TB?
The OWC Envoy Pro FX Portable 4TB is faster with 2,800 MB/s read speeds compared to 1,050 MB/s for the Transcend ESD310C Portable 2TB. That's a 167% speed advantage.
Which has better value, OWC Envoy Pro FX Portable 4TB or Transcend ESD310C Portable 2TB?
The OWC Envoy Pro FX Portable 4TB scores higher (8.9 vs 7.7/10), indicating better overall value in our evaluation. Check both models on the retailer's site for the latest details.

More Comparisons

OWC Envoy Pro FX Portable 4TB vs Samsung T9 Portable SSD → Transcend ESD310C Portable 2TB vs Samsung T9 Portable SSD →
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