SanDisk Ultra 64GB
Score: 75/100
SanDisk Ultra Flair 256GB
Score: 79/100Rankings
The SanDisk Ultra Flair 256 GB USB 3.0 flash drive delivers high read performance and a rugged metal case with a 5-year warranty. It lacks a USB-C interface and does not specify write speeds, which may affect some users. Best for users who need fast, reliable storage on devices with USB-A ports.
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 | 256 GBbest | |
130 MB/s | 150 MB/sbest | |
40 MB/sbest | — | |
| ↓ lower better | 8.5 g | 4.5 gbest |
5 yearsbest | 5 yearsbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Storage(1) | ||
Storage Capacity (GB) | 64 GB | 256 GB |
Performance(1) | ||
Read Speed (MB/s) | 130 MB/s | 150 MB/s |
General(1) | ||
OS Compatibility | Windows 10+, macOS 12+, Android 8+, iOS 13+, USB Type-A | Windows, macOS |
Build & Design(2) | ||
Weight (g) | 8.5 g | 4.5 g |
Dimensions (L×W×H) (mm) | 69.09×22.1×9.91 mm mm | 42.93×12.95×7.11 mm mm |
Power(1) | ||
Operating Temperature (°C) | 0 – 45 °C °C | 0-35 °C |
Software(1) | ||
Included Software | SecureAccess, RescuePRO Deluxe, SanDisk backup app | SanDisk SecureAccess |
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 Ultra Flair 256GB for its high read speed, rugged metal construction, and SecureAccess encryption, noting it handles 4K movie transfers in seconds.
Everyday users generally express satisfaction with the drive's speed, durability, and compactness, frequently highlighting the convenience of password protection.
