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Portable SSDs

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OWC Envoy Pro FX Portable 4TB vs SanDisk Extreme Portable SSD

Compare OWC Envoy Pro FX Portable 4TB and SanDisk Extreme Portable SSD 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 →

SanDisk

SanDisk Extreme Portable SSD
8.7/10

Rugged, reliable portable storage with IP55 rating. Built for adventure with a convenient loop design.

IP55 water and dust resistance
Drop-proof up to 3 meters
Compact and lightweight
Check on Amazon →

Spec Comparison

Spec
OWC Envoy Pro FX Portable 4TB
SanDisk Extreme Portable SSD
Read Speed
2.8 GB/s ✓
1.1 GB/s
Write Speed
2.8 GB/s ✓
1.0 GB/s
Capacity
4 TB ✓
1 TB
Interface
Thunderbolt 3
USB 3.2 Gen 2
Endurance (TBW)
2,400 TB ✓
500 TB
Warranty
3 Years
3 Years
Score
8.9/10 ✓
8.7/10
Total Wins
5 wins
0 wins

Frequently Asked Questions

Which is better, OWC Envoy Pro FX Portable 4TB or SanDisk Extreme Portable SSD?
The OWC Envoy Pro FX Portable 4TB scores 8.9/10 compared to 8.7/10 for the SanDisk Extreme Portable SSD. 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 SanDisk Extreme Portable SSD?
The key differences: The OWC Envoy Pro FX Portable 4TB offers 2,800 MB/s reads vs 1,050 MB/s for the SanDisk Extreme Portable SSD. Capacity options differ: OWC Envoy Pro FX Portable 4TB is 4TB while SanDisk Extreme Portable SSD is 1TB. The OWC Envoy Pro FX Portable 4TB uses Thunderbolt 3 while the SanDisk Extreme Portable SSD uses USB 3.2 Gen 2.
Which is faster, OWC Envoy Pro FX Portable 4TB or SanDisk Extreme Portable SSD?
The OWC Envoy Pro FX Portable 4TB is faster with 2,800 MB/s read speeds compared to 1,050 MB/s for the SanDisk Extreme Portable SSD. That's a 167% speed advantage.
Which has better value, OWC Envoy Pro FX Portable 4TB or SanDisk Extreme Portable SSD?
The OWC Envoy Pro FX Portable 4TB scores higher (8.9 vs 8.7/10), indicating better overall value in our evaluation. Check both models on the retailer's site for the latest details.

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