
Transcend 512GB USB Flash Drive
Score: 72/100
Kingston DataTraveler Max 1TB
Score: 88/100Rankings

A high-performance 1 TB USB-C flash drive delivering SSD-class speeds in a compact, sliding-connector form factor. It excels in speed and convenience but is bulkier, can heat up, and lacks built-in encryption.

The Transcend JF790 512 GB USB flash drive offers high capacity and a convenient retractable design, making it suitable for everyday storage across many devices. While its speeds are adequate for typical documents and media, they fall short of premium drives, and it lacks encryption.
| Attribute | ![]() | ![]() |
|---|---|---|
512 GB | 1,024 GBbest | |
90 MB/s | 1,000 MB/sbest | |
60 MB/s | 900 MB/sbest | |
60 monthsbest | 60 monthsbest | |
| ↓ lower better | 10 gbest | 12 g |
| ↓ lower better | 63.6 mmbest | 82.17 mm |
| ↓ lower better | 21.2 mmbest | 22 mm |
| ↓ lower better | 10.6 mm | 9.02 mmbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Storage(1) | ||
Capacity (GB) | 512 GB | 1024 GB |
Performance(2) | ||
Read Speed (MB/s) | 90 MB/s | 1000 MB/s |
Write Speed (MB/s) | 60 MB/s | 900 MB/s |
Physical(4) | ||
Weight (g) | 10 g | 12 g |
Length (mm) | 63.6 mm | 82.17 mm |
Width (mm) | 21.2 mm | 22.00 mm |
Height (mm) | 10.6 mm | 9.02 mm |
Connectivity(1) | ||
USB Interface | USB 3.2 Gen 1 | USB 3.2 Gen 2 |
Compatibility(1) | ||
Operating System Compatibility | Windows, macOS, Linux, ChromeOS, Android (OTG) | Windows, macOS, Linux, Chrome OS |

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

Professional reviewers view the JF790 as a reliable, well-built flash drive that offers solid value for casual users, but they note its speed falls short of premium offerings and it lacks advanced security features.
Everyday users praise the drive's convenient retractable design, cross-device compatibility, and dependable performance for everyday files, while recurring complaints focus on slower transfer rates and occasional wear of the retractable part.




Professional reviewers laud the DataTraveler Max for delivering SSD-class speeds in a USB-C flash drive, calling it a game-changing product that rivals external SSDs, while noting the plastic construction, exposed half-connector, and need for a USB 3.2 Gen 2 host to unlock its full potential.
Everyday users are overwhelmingly positive about the drive's blazing fast transfers and convenient sliding design, often highlighting how quickly large video files move; common complaints revolve around heating, bulkier size, lack of encryption, and a cheap plastic feel.