SanDisk Extreme PRO Portable SSD 1TB
Score: 75/100
Corsair EX400U 2TB
Score: 74/100Rankings
The SanDisk Extreme PRO 1 TB delivers flagship-class NVMe speeds in a rugged, IP65-rated aluminum case, targeting professionals who need rapid off-loading of large media files. However, recent firmware reliability concerns and limited macOS performance temper its appeal.
The Corsair EX400U is an ultra-compact USB4 SSD delivering some of the fastest portable read speeds on the market and a unique MagSafe feature for iPhone creators, though it lacks ruggedness and full write-speed potential.
| Attribute | | |
|---|---|---|
1,000 GB | 2,048 GBbest | |
2,000 MB/s | 4,000 MB/sbest | |
2,000 MB/s | 3,600 MB/sbest | |
5 yearsbest | 3 years | |
| ↓ lower better | 77.5 gbest | 92 g |
| ↓ lower better | 10.2 mmbest | 11.9 mm |
| ↓ lower better | — | 64.3 mmbest |
| ↓ lower better | 57.4 mmbest | 64 mm |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Performance(3) | ||
Interface | USB 3.2 Gen 2x2 | USB4 |
Sequential Read Speed (MB/s) | 2000 MB/s | 4000 MB/s |
Sequential Write Speed (MB/s) | 2000 MB/s | 3600 MB/s |
Warranty & Support(1) | ||
Warranty Period (years) | 5 years | 3 years |
Compatibility(1) | ||
Supported Operating Systems | Windows, macOS | Windows, macOS, iOS |
Storage(2) | ||
Storage Capacity (GB) | 1000 GB | 2048 GB |
NAND Type | NVMe | TLC |
Power(1) | ||
Power Source | Bus-powered | USB-C PD |
Build & Design(3) | ||
Weight (g) | 77.5 g | 92 g |
Thickness (mm) | 10.2 mm | 11.9 mm |
Width (mm) | 57.4 mm | 64 mm |
Products in the top-left offer the best value (high score, low price).
Professional reviewers praise the Extreme PRO's 2000 MB/s speeds, rugged build, and long warranty, but warn about firmware-related reliability problems that emerged in 2023, advising caution until resolved.
Users love the fast transfers and included cables, but a growing number report sudden drive failures and frustration with limited Mac support and firmware issues.
“Transfers 4K video files in seconds”
“Love the included cables - no need to carry adapters”
“Drive suddenly became unreadable after 18 months - lost all my project files”
Professional reviewers praise the EX400U's groundbreaking speed, tiny form factor, and MagSafe integration, while noting the write-speed shortfall, modest endurance, and absence of encryption or rugged features.
Users love the lightning-fast transfers and iPhone attachment, but express concerns about write-speed limits, durability, and lack of encryption.
