SanDisk Ultra 64GB
Score: 75/100
Vansuny USB Flash Drive 512GB
Score: 79/100Rankings
The Vansuny 512 GB Type-C flash drive delivers near-1 GB/s sequential performance and a rugged zinc-alloy body with dual USB-A/C connectors. Its random-access speeds and occasional USB-C throttling are drawbacks. Ideal for creators moving large media files on the go.
The SanDisk Ultra 64 GB USB-3.0 flash drive delivers solid 130 MB/s read speeds, a convenient capless slide-out design, and built-in encryption and recovery software. Its write speed tops out at 40 MB/s and performance can drop on older USB-2.0 ports, while the 64 GB capacity may be limiting for larger libraries. Best suited for students and professionals needing portable, secure storage.
| Attribute | | |
|---|---|---|
64 GB | 512 GBbest | |
130 MB/s | 1,013.42 MB/sbest | |
40 MB/s | 963.46 MB/sbest | |
| ↓ lower better | 8.5 gbest | — |
5 yearsbest | — |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Storage(1) | ||
Storage Capacity (GB) | 64 GB | 512 GB |
Performance(2) | ||
Read Speed (MB/s) | 130 MB/s | 1013.42 MB/s |
Write Speed (MB/s) | 40 MB/s | 963.46 MB/s |
Connectivity(2) | ||
USB Version | USB 3.0 | USB 3.2 Gen 2 |
Interface | USB Type-A | USB Type-A + USB Type-C (OTG) |
General(1) | ||
OS Compatibility | Windows 10+, macOS 12+, Android 8+, iOS 13+, USB Type-A | Windows 7/8/10/XP/2000/ME/NT, Linux, Mac OS |
Build & Design(1) | ||
Dimensions (L×W×H) (mm) | 69.09×22.1×9.91 mm mm | 79.7×21.2×8.5 mm mm |
Products in the top-left offer the best value (high score, low price).
Professional reviewers consistently commend the SanDisk Ultra 64GB USB-A flash drive for its solid 130 MB/s read performance, reliable 40 MB/s write speed, and the added value of security and recovery software. They note the longer 5-year warranty as a differentiator, while pointing out the lack of detailed endurance data and the drop in speed on legacy USB 2.0 ports.
Everyday users love the fast read speeds and the generous 64 GB capacity for media and backups, highlighting the convenient capless slide-out design and the usefulness of SecureAccess. Common complaints revolve around slower write speeds, occasional recognition hiccups on older ports, and the fact that formatted usable space is a few gigabytes less than the advertised capacity.
“up to 100-130MB/s feels blazing for files/movies”
“full movie in <40s”
Professional reviewers commend the Vansuny 512GB OTG drive for its near-advertised sequential performance, high AS SSD benchmark score, and robust zinc-alloy construction, but they point out inconsistent USB-C speeds and modest random 4K read rates, and note the lack of coverage from major tech publications.
Everyday users appreciate the fast large-file transfers, especially the ability to move a 4 GB movie to a phone in seconds, and value the plug-and-play experience across multiple platforms, though they report occasional port-speed differences and wish for more information on durability and heat.
