
PNY Turbo Attache 3 512GB
Score: 58/100
SanDisk Ultra Fit 512GB
Score: 89/100Rankings

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 PNY 512GB Turbo Attaché 3 offers high capacity and decent read speeds in a capless sliding design, but its bulky plastic body and lack of encryption limit its suitability for security-focused or ultra-compact needs.
| Attribute | ![]() | ![]() |
|---|---|---|
512 GBbest | 512 GBbest | |
100 MB/s | 400 MB/sbest | |
30 MB/sbest | — | |
12 months | 60 monthsbest | |
| ↓ lower better | 18 g | 10 gbest |
| ↓ lower better | 133.35 mm | 29.7 mmbest |
| ↓ lower better | 99.06 mm | 14.2 mmbest |
| ↓ lower better | 11.43 mm | 5.1 mmbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Performance(2) | ||
Read Speed (MB/s) | 100 MB/s | 400 MB/s |
Write Speed (MB/s) | 30 MB/s | 4-60 MB/s |
Warranty(1) | ||
Warranty Period (months) | 12 months | 60 months |
Security(1) | ||
Encryption Support | false | true |
Physical(4) | ||
Weight (g) | 18 g | 10 g |
Length (mm) | 133.35 mm | 29.7 mm |
Width (mm) | 99.06 mm | 14.2 mm |
Height (mm) | 11.43 mm | 5.1 mm |
Connectivity(1) | ||
USB Interface | USB 3.0 | USB 3.2 Gen 1 |
Compatibility(1) | ||
Operating System Compatibility | Windows, macOS | Windows; macOS; consoles; smart TV; car audio |

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

Professional reviewers consider the Turbo Attaché 3 a solid mid-tier flash drive, highlighting its 100 MB/s read speed, plug-and-play simplicity and broad OS support, while noting the lack of hardware encryption and modest plastic construction.
Everyday users overwhelmingly praise the drive's speed, capacity and convenient sliding design, awarding it an average of 4.6 / 5 stars, though complaints focus on its bulky width, cheap plastic feel, and absence of clear write-speed specifications.

“Users consistently rate the drive 5 stars for performance and reliability.”

“too fat”

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




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.