
SanDisk Ultra Fit 512GB
Score: 89/100
Samsung Type-C 512GB
Score: 84/100Rankings

The SanDisk Ultra Fit 512 GB USB 3.2 Gen 1 flash drive packs massive storage into an ultra-compact, low-profile design. It delivers excellent read performance and encryption, but its write speeds are notably slow and the plastic case offers limited ruggedness.

The Samsung Type-C 512 GB flash drive offers fast 400 MB/s read performance in a compact metal chassis with a reversible USB-C connector and five-proof ruggedness, backed by a 5-year warranty. Its write speed is modest and the capless design may attract debris, but it excels for modern USB-C devices and demanding portable use.
| Attribute | ![]() | ![]() |
|---|---|---|
512 GBbest | 512 GBbest | |
400 MB/sbest | 400 MB/sbest | |
— | 110 MB/sbest | |
60 monthsbest | 60 monthsbest | |
| ↓ lower better | 10 g | 3.4 gbest |
| ↓ lower better | 29.7 mmbest | 33.8 mm |
| ↓ lower better | 14.2 mmbest | 16 mm |
| ↓ lower better | 5.1 mm | 2.54 mmbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Performance(1) | ||
Write Speed (MB/s) | 4-60 MB/s | 110 MB/s |
Security(1) | ||
Encryption Support | true | false |
Physical(4) | ||
Weight (g) | 10 g | 3.4 g |
Length (mm) | 29.7 mm | 33.8 mm |
Width (mm) | 14.2 mm | 16.0 mm |
Height (mm) | 5.1 mm | 2.54 mm |
Connectivity(1) | ||
USB Interface | USB 3.2 Gen 1 | USB 3.2 Gen 1 (Type-C) |
Compatibility(1) | ||
Operating System Compatibility | Windows; macOS; consoles; smart TV; car audio | Windows, macOS, Linux, Android, smart TVs, car systems |

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

Professional reviewers commend the Ultra Fit for its minuscule size and impressive read performance, positioning it as an ideal solution for devices with limited space, while warning that the write speed is a major bottleneck.
Everyday users love the drive's ability to stay hidden in laptops, consoles, and car stereos while providing ample storage and fast media playback. The dominant complaint centers on painfully slow write speeds and the difficulty of removing the drive once fully inserted.

“Perfect for my PS5 - fits behind the panel and stores game saves and screenshots.”

“I leave it in my laptop all the time - barely sticks out.”

“Fast enough to play 4K videos directly from the drive.”




Professional reviewers commend the drive's impressive 400 MB/s read speed, compact metal chassis, and 5-proof ruggedness, describing it as a well-balanced solution for creators and mobile professionals.
Everyday users consistently praise the drive's speed, durability, and sleek metal look, often highlighting its ability to handle large 4K video transfers quickly. Common complaints revolve around the slower write speed, the capless connector attracting debris, and occasional compatibility hiccups with older devices.