SanDisk Ultra Fit 512GB
Score: 89/100
Teamgroup S5 512GB
Score: 75/100Rankings
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.
TEAMGROUP's 512 GB S5 USB 3.2 Gen 1 thumb drive combines high read speeds, lightweight COB construction and water-, dust- and shock-resistance, making it a durable everyday storage option, though write performance details are lacking.
| Attribute | | |
|---|---|---|
512 GBbest | 512 GBbest | |
400 MB/sbest | 140 MB/s | |
60 monthsbest | — | |
| ↓ lower better | 10 gbest | 18 g |
| ↓ lower better | 29.7 mmbest | 35.1 mm |
| ↓ lower better | 14.2 mm | 13.5 mmbest |
| ↓ lower better | 5.1 mmbest | 5.6 mm |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Performance(1) | ||
Read Speed (MB/s) | 400 MB/s | 140 MB/s |
Security(1) | ||
Encryption Support | true | false |
Physical(4) | ||
Weight (g) | 10 g | 18 g |
Length (mm) | 29.7 mm | 35.1 mm |
Width (mm) | 14.2 mm | 13.5 mm |
Height (mm) | 5.1 mm | 5.6 mm |
Compatibility(1) | ||
Operating System Compatibility | Windows; macOS; consoles; smart TV; car audio | Windows, macOS, Linux |
Products in the top-left offer the best value (high score, low price).
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.
“Perfect for my PS5 - fits behind the panel and stores game saves and screenshots.”
“I leave it in my laptop all the time - barely sticks out.”
“Fast enough to play 4K videos directly from the drive.”
The S5 is better for durability and performance; the Ultra Fit is suited only when a hidden, low-profile drive is required.
Professional reviewers commend the S5 series for its durable COB construction, solid 140 MB/s read performance and the confidence provided by a lifetime warranty, while noting the lack of published write-speed figures.
Everyday users appreciate the quick read speeds, tiny footprint, and rugged feel, but mention slower write speeds, occasional heat during heavy transfers, and a slight loss of usable capacity after formatting.
