SanDisk Ultra 512GB
Score: 63/100
PNY Turbo Attaché 3 128GB 5-pack
Score: 90/100Rankings
PNY's Turbo Attaché 3 128 GB 5-pack offers very fast 140 MB/s reads, a cap-less sliding collar, and an activity LED in a lightweight plastic body, providing good value for casual users, but inconsistent write speeds and a stiff slider can be frustrating.
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 | 128 GB | |
130 MB/s | 140 MB/sbest | |
— | 30 MB/sbest | |
5 yearsbest | 1 years | |
| ↓ lower better | 20 g | 1.13 gbest |
| ↓ lower better | 10.7 mmbest | 25.4 mm |
| ↓ lower better | 22.1 mm | 20.3 mmbest |
| ↓ lower better | 7.9 mm | 7.6 mmbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Storage(1) | ||
Storage Capacity (GB) | 512 GB | 128 GB |
Performance(2) | ||
Read Speed (MB/s) | 130 MB/s | 140 MB/s |
Write Speed (MB/s) | 12-25 MB/s | 30 MB/s |
Connectivity(1) | ||
USB Interface | USB 3.0 | USB 3.2 Gen 1 |
Warranty & Support(1) | ||
Warranty Period (years) | 5 years | 1 years |
Compatibility(1) | ||
Compatible Operating Systems | Windows, macOS, Linux | Windows; macOS |
Design(1) | ||
LED Indicator | false | true |
Physical(4) | ||
Weight (g) | 20 g | 1.13 g |
Length (mm) | 10.7 mm | 25.4 mm |
Width (mm) | 22.1 mm | 20.3 mm |
Height (mm) | 7.9 mm | 7.6 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.”
Professional reviewers consider the Turbo Attaché 3 a solid, everyday USB-3.0 drive with a convenient capless design and reliable read speeds, but they flag its inconsistent write performance and the finicky sliding collar as drawbacks.
Everyday users generally rate the drive highly (4.5-4.7/5), praising its fast reads, durability, activity LED, and capless convenience, while repeatedly complaining about the stiff slider, variable write speeds, and cheap-feel plastic housing.
