Transcend 512GB USB Flash Drive
Score: 72/100
SanDisk Extreme PRO 512GB Dual
Score: 79/100Rankings
The SanDisk Extreme PRO 512 GB Dual Drive delivers near-advertised sequential speeds, a rugged metal case, and hardware encryption, making it ideal for creators who need fast, secure transfers across USB-C and USB-A devices. Its size, weight, and price keep it from being a pocket-friendly everyday drive.
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 GBbest | 512 GBbest | |
90 MB/s | 1,000 MB/sbest | |
60 MB/s | 900 MB/sbest | |
60 monthsbest | — | |
| ↓ lower better | 10 gbest | 22.68 g |
| ↓ lower better | 63.6 mmbest | 80 mm |
| ↓ lower better | 21.2 mm | 18.3 mmbest |
| ↓ lower better | 10.6 mmbest | 10.7 mm |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Performance(2) | ||
Read Speed (MB/s) | 90 MB/s | 1000 MB/s |
Write Speed (MB/s) | 60 MB/s | 900 MB/s |
Security(1) | ||
Encryption Support | false | true |
Physical(4) | ||
Weight (g) | 10 g | 22.68 g |
Length (mm) | 63.6 mm | 80 mm |
Width (mm) | 21.2 mm | 18.3 mm |
Height (mm) | 10.6 mm | 10.7 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 |
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.
“Users appreciate the seamless transfer between MacBook (USB-C) and older Windows PCs (USB-A).”
“One user mentioned confusion about software setup for encryption, requiring a visit to SanDisk's support site.”
“A few note that the drive gets warm during prolonged transfers, though not to concerning levels.”
Professional reviewers commend the near-advertised sequential speeds, robust metal construction, and dual-connector design, while noting random I/O performance falls short of SSDs and the drive can run warm under load.
Everyday users love the fast transfers between USB-C laptops and legacy PCs, appreciate the security of hardware encryption, but mention the tight swivel, warmth during long transfers, and higher cost.
