SanDisk Ultra 512GB
Score: 63/100
Samsung FIT Plus 512GB
Score: 86/100Rankings
The Samsung FIT Plus 512 GB flash drive combines a rugged metal case with fast 400 MB/s read/write performance in an ultra-compact USB-A form factor. It excels for users needing large, portable storage and durability, though the lack of USB-C and limited warranty may be drawbacks.
The SanDisk Ultra 512GB USB 3.0 flash drive delivers solid read performance and built-in software encryption in a compact slide-out design, backed by a five-year warranty. Its write speed is modest, it lacks an LED indicator, and the absence of USB-C limits compatibility with newer devices.
| Attribute | | |
|---|---|---|
512 GBbest | 512 GBbest | |
130 MB/s | 400 MB/sbest | |
— | 400 MB/sbest | |
5 yearsbest | 1 years | |
| ↓ lower better | 20 g | 3.1 gbest |
| ↓ lower better | 10.7 mmbest | 23.62 mm |
| ↓ lower better | 22.1 mm | 18.8 mmbest |
| ↓ lower better | 7.9 mm | 2.54 mmbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Performance(2) | ||
Read Speed (MB/s) | 130 MB/s | 400 MB/s |
Write Speed (MB/s) | 12-25 MB/s | 400 MB/s |
Connectivity(1) | ||
USB Interface | USB 3.0 | USB-A 3.2 |
Warranty & Support(1) | ||
Warranty Period (years) | 5 years | 1 years |
Compatibility(1) | ||
Compatible Operating Systems | Windows, macOS, Linux | Windows, macOS, Linux, consoles, smart TVs, car infotainment |
Physical(4) | ||
Weight (g) | 20 g | 3.10 g |
Length (mm) | 10.7 mm | 23.62 mm |
Width (mm) | 22.1 mm | 18.80 mm |
Height (mm) | 7.9 mm | 2.54 mm |
Products in the top-left offer the best value (high score, low price).
Professional reviewers from TechRadar and PCMag praise the Ultra CZ48 series for its reliable read performance, solid 5-year warranty and the rare inclusion of useful encryption software, positioning it as a good value mid-tier flash drive. They caution that the advertised 130 MB/s read speed is achievable only under optimal conditions, the write speed lags behind premium competitors, and the lack of USB-C limits its appeal for newer laptops.
Everyday users rate the drive 4.6-4.8 stars, highlighting its ease of use, fast large-file transfers and the convenience of built-in encryption. Recurring complaints focus on slower write speeds, exFAT compatibility limits with entertainment devices, and the physical width making insertion into cramped ports tricky.
“Users consistently rate the drive highly (4.6-4.8 stars across retailers) for ease of use, speed, and storage capacity.”
“Many appreciate the secure encryption feature, with verified purchasers noting it's easy to set up and works without needing an internet connection.”
“Transfers large video files in seconds-way faster than my old SanDisk.”
Professional reviewers praise the FIT Plus for reliable real-world performance and its rugged, ultra-compact design, while noting the absence of a USB-C interface as a limitation in 2026.
Everyday users rate the drive highly for speed, durability and convenience, but complain about inconsistent write speeds on older PCs and the lack of a USB-C connector.
