
Crucial X9 Pro 4TB
Score: 94/100
Samsung T9 4TB
Score: 82/100Rankings

The Crucial X9 Pro 4TB delivers fast, secure, and rugged portable storage in a tiny package, though users note the short cable and lack of a USB-A adapter.

The Samsung T9 4TB Portable SSD delivers industry-leading 2,000 MB/s read/write performance in a rugged, rubberized enclosure with 3 m drop resistance and AES-256 encryption, making it ideal for creators who need speed and capacity on the go.
| Attribute | ![]() | ![]() |
|---|---|---|
4,000 GBbest | 4,000 GBbest | |
1,050 MB/s | 2,000 MB/sbest | |
1,050 MB/s | 2,000 MB/sbest | |
5 yearsbest | 5 yearsbest | |
| ↓ lower better | 38 gbest | 122 g |
| ↓ lower better | 10 mmbest | 15.2 mm |
| ↓ lower better | 65 mmbest | 88.9 mm |
| ↓ lower better | 50 mmbest | 61 mm |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Performance(3) | ||
Interface | USB 3.2 Gen 2 | USB 3.2 Gen 2x2 |
Sequential Read Speed (MB/s) | 1050 MB/s | 2000 MB/s |
Sequential Write Speed (MB/s) | 1050 MB/s | 2000 MB/s |
Compatibility(1) | ||
Supported Operating Systems | Windows, macOS, Linux, Android, iPadOS, Xbox, PlayStation | Windows, macOS, Android |
Storage(1) | ||
NAND Type | TLC | 3D V-NAND |
Build & Design(4) | ||
Weight (g) | 38 g | 122 g |
Thickness (mm) | 10 mm | 15.2 mm |
Length (mm) | 65 mm | 88.9 mm |
Width (mm) | 50 mm | 61 mm |


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

Professional reviewers rate the X9 Pro highly, calling it a tiny, near-perfect external SSD with sturdy frame and hardware encryption, while noting it falls short of the X10 Pro's top-tier speeds.
Everyday users appreciate its pocket-sized form factor, fast transfers, and rugged build, but complain about missing accessories and occasional speed gaps.

Professional reviewers praise the T9 for its industry-leading speeds, premium build, and reliable performance across platforms, while noting the need for a compatible USB 3.2 Gen 2x2 host to unlock its full potential.
Users rate the drive 4.8/5, highlighting its blazing speed and solid build, though some mention occasional slowdowns and macOS mounting issues.
“perfect for travel”

“easy to carry on a keychain”

“lack of a USB-A adapter is a frequent frustration”


