
Crucial X10 Pro 4TB
Score: 87/100
SanDisk Extreme PRO 4TB USB4
Score: 92/100Rankings

The 4 TB SanDisk Extreme PRO Portable SSD uses USB4 to deliver near-internal SSD performance with up to 3800 MB/s reads, while offering rugged IP65 protection and hardware encryption. It shines on Thunderbolt-4 hosts but can fall back to slower speeds on older machines, and its larger size makes it less pocket-friendly.

The Crucial X10 Pro 4TB delivers top-tier NVMe performance in a tiny, rugged package with hardware encryption and a long warranty, but its 20 Gbps interface is not widely supported and some users report early failures.
| Attribute | ![]() | ![]() |
|---|---|---|
4 GB | 4,000 GBbest | |
2,100 MB/s | 3,800 MB/sbest | |
2,000 MB/s | 3,700 MB/sbest | |
| ↓ lower better | 42 gbest | 172 g |
60 monthsbest | 60 monthsbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Capacity(1) | ||
Storage Capacity (GB) | 4 GB | 4000 GB |
Performance(3) | ||
Interface | USB 3.2 Gen 2x2 | USB4 |
Sequential Read Speed (MB/s) | 2100 MB/s | 3800 MB/s |
Sequential Write Speed (MB/s) | 2000 MB/s | 3700 MB/s |
Build & Design(3) | ||
Weight (g) | 42 g | 172 g |
Form Factor | portable | 2280 |
IP Rating | IP55 | IP65 |
Compatibility(1) | ||
Operating System Compatibility | Windows, macOS, Linux, Android, iPadOS, Xbox, PlayStation, ChromeOS | Windows 10+, macOS 14+ |

Products in the top-left offer the best value (high score, low price).

Professional reviewers praise the X10 Pro for its blistering sequential speeds, pocket-size form factor and rugged IP55 construction, noting strong PCMark 10 scores, but caution that many laptops lack native USB 3.2 Gen 2x2 support, limiting real-world throughput.
Consumers love the speed and portability, especially for 4K video editing, yet a notable minority experience early drive failures and cannot achieve advertised speeds on Apple hardware.

“Incredibly fast and small - perfect for travel.”

“No issues with editing 4K video directly from the drive.”

“Multiple users report drive failures within a year.”




Professional reviewers commend the Extreme PRO USB4 SSD for its blazing peak speeds and rugged build, but repeatedly warn that real-world performance hinges on a fully compatible 40 Gbps host. PCWorld and The SSD Review note that without BIOS or firmware updates the drive often falls back to slower USB 3.x rates, and some USB4 implementations cap at 32 Gbps, keeping it slightly behind rivals like the Samsung X5. Nonetheless, on Thunderbolt-4 Macs the drive consistently hits its advertised 3800 MB/s reads.
Everyday users, especially video editors and photographers, praise the drive's speed, plug-and-play ease, and durable design for on-location work. The average rating hovers around 4.5 / 5, though recurring complaints focus on initial connection hiccups, the larger form factor, and occasional speed throttling after the cache is exhausted.