Thkailar USB Flash Drive 512GB Red
Score: 76/100
Zarmst USB-C 4-in-1 Flash Drive 256GB Blue
Score: 69/100Rankings
The Thkailar 512 GB USB flash drive offers a versatile dual-port design and a robust aluminum alloy body, delivering fast read speeds up to 120 MB/s. Its write performance is modest and it lacks built-in encryption, which may concern security-focused users. Ideal for business travelers needing cross-platform compatibility.
The ZARMST 256 GB 4-in-1 flash drive offers a versatile multi-connector design and an encryption app, making cross-platform storage convenient. However, its real-world transfer speeds fall short of claims and it can become hot during use. Best suited for users needing occasional backups across devices.
| Attribute | | |
|---|---|---|
512 GBbest | 256 GB | |
120 MB/sbest | 80 MB/s | |
— | 30 MB/sbest | |
| ↓ lower better | 91 g | 32 gbest |
1 yearsbest | — |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Storage(1) | ||
Storage Capacity (GB) | 512 GB | 256 GB |
Performance(2) | ||
Read Speed (MB/s) | 120 MB/s | 80 MB/s |
Write Speed (MB/s) | 15-55 MB/s | 30 MB/s |
Connectivity(2) | ||
USB Version | USB 3.1 | USB 3.0 |
Interface | USB 3.1 Type-A, USB 3.1 Type-C | Lightning, Micro USB, USB-C, USB-A |
General(1) | ||
OS Compatibility | Windows, Linux, macOS, Android, iOS, others | iPhone, iPad, Android (OTG), PC, Mac |
Build & Design(3) | ||
Weight (g) | 91 g | 32 g |
Dimensions (L×W×H) (mm) | 66.0x20.3x7.6 mm | 42.93×22.10×5.08 mm mm |
Material | Aluminum alloy | Aluminum frosted |
Products in the top-left offer the best value (high score, low price).
Professional reviewers commend the Thkailar 512GB drive for its fast read performance, versatile dual-port connectivity, and robust aluminum alloy build that helps manage heat during prolonged transfers. They also appreciate the plug-and-play simplicity and the durability of the metal casing, positioning it as a reliable tool for business travelers and power users.
Everyday users give the drive a high overall rating, indicating general satisfaction with its ease of use, cross-platform compatibility, and solid construction.
Professional reviewers commend the ZARMST drive for its versatile 4-in-1 connector layout, compact thumb-drive form factor, and the security-focused app that adds encryption and fingerprint unlocking. However, they criticize the gap between advertised and real-world speeds, heat generation during transfers, case-related compatibility issues, and raise doubts about the true usable capacity and overall build durability.
Everyday users love the convenience of a single drive that works across iPhone, Android and computers, especially the one-click backup app and the ability to move large media files via USB 3.0. Recurring complaints focus on slower-than-expected transfer speeds, the device heating up, incompatibility with phones in cases, and uncertainty about whether the full 256 GB is actually usable.
