
SSK Dual USB-C 128GB
Score: 89/100
Garmese USB-C SSD 256GB
Score: 81/100Rankings

The SSK 128 GB dual-head flash drive delivers SSD-level speeds in a rugged metal case, offering USB-C and USB-A 3.2 Gen2 connectivity and extensive OS support. Its durability features make it ideal for creators on the move, though its size and occasional speed throttling near capacity are trade-offs.

The GARMESE 256 GB dual-connector flash drive offers fast burst performance and a rugged metal case, making it suitable for creators and travelers. However, its sustained speeds fall short of the advertised rates and it runs warm under heavy load.
| Attribute | ![]() | ![]() |
|---|---|---|
128 GB | 256 GBbest | |
550 MB/sbest | 450 MB/s | |
520 MB/sbest | 400 MB/s | |
— | 12 monthsbest | |
| ↓ lower better | 37 gbest | 82 g |
| ↓ lower better | 78 mm | 66.5 mmbest |
| ↓ lower better | 20.5 mm | 19.8 mmbest |
| ↓ lower better | 8.6 mm | 8.4 mmbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Storage(1) | ||
Capacity (GB) | 128 GB | 256 GB |
Performance(2) | ||
Read Speed (MB/s) | 550 MB/s | 450 MB/s |
Write Speed (MB/s) | 520 MB/s | 400 MB/s |
Physical(4) | ||
Weight (g) | 37 g | 82 g |
Length (mm) | 78 mm | 66.5 mm |
Width (mm) | 20.5 mm | 19.8 mm |
Height (mm) | 8.6 mm | 8.4 mm |
Connectivity(1) | ||
USB Interface | USB-C/USB-A 3.2 Gen2 | USB-C/USB-A 3.2 Gen1 |
Compatibility(1) | ||
Operating System Compatibility | Windows, macOS, Linux, Android, iOS | Windows, macOS, Linux, Android, smart TVs, game consoles, car audio systems, projectors |


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

Professional reviewers highlight the SSK SD301 as a rare flash drive that delivers SSD-class throughput while offering a dual-head USB-C/USB-A design, making it ideal for creators who need to move large media files between phones and laptops.
Everyday users consistently praise the drive's blazing fast transfers and sturdy feel, calling it "very handy for video editing" and noting flawless operation with iPhone 15 and MacBook.

Professional testers acknowledge the GARMESE drive's impressive burst speeds and convenient dual-connector layout, but they criticize its over-stated sustained performance and the lack of a sizable cache, which causes noticeable speed throttling on large transfers.
Everyday users praise the drive's quick initial transfers, sturdy metal housing and the ease of swapping between USB-A and USB-C devices, but many complain about speed drops on big files, warmth during long sessions, and occasional Android compatibility hiccups.
“Fast transfer speeds”

“Great build quality”

“Very handy for video editing”

