Transcend JF920 128GB
Score: 71/100
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 Transcend JetFlash 920 128 GB delivers near-SSD performance in a sleek aluminum case with a retractable slider, making it ideal for creators and travelers needing fast, reliable storage. It lacks encryption and waterproofing, and the FAT32 format may require re-formatting for large files.
| Attribute | | |
|---|---|---|
128 GB | 512 GBbest | |
420 MB/sbest | 400 MB/s | |
400 MB/sbest | — | |
60 monthsbest | 60 monthsbest | |
| ↓ lower better | 10 gbest | 10 gbest |
| ↓ lower better | 62 mm | 29.7 mmbest |
| ↓ lower better | 20 mm | 14.2 mmbest |
| ↓ lower better | 7.8 mm | 5.1 mmbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Storage(1) | ||
Capacity (GB) | 128 GB | 512 GB |
Performance(2) | ||
Read Speed (MB/s) | 420 MB/s | 400 MB/s |
Write Speed (MB/s) | 400 MB/s | 4-60 MB/s |
Security(1) | ||
Encryption Support | false | true |
Physical(3) | ||
Length (mm) | 62 mm | 29.7 mm |
Width (mm) | 20 mm | 14.2 mm |
Height (mm) | 7.8 mm | 5.1 mm |
Compatibility(1) | ||
Operating System Compatibility | Windows 7+, macOS 9+, Linux Kernel 2.4.2+, ChromeOS, Android (OTG) | Windows; macOS; consoles; smart TV; car audio |
Products in the top-left offer the best value (high score, low price).
Professional reviewers praise the JetFlash 920 for near-SSD speeds, premium aluminum build, and suitability for dashcam and content-creation workflows, while noting the absence of encryption and the need to reformat from FAT32.
Everyday users rate the drive highly for its speed and durability, though they commonly mention the FAT32 limitation and occasional slider looseness.
“up to 420 MB/s read speeds”
“a perfect bridge between legacy and modern devices”
“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.
