Transcend ESD270C 250GB
Score: 68/100
Netac ZX20 256GB
Score: 77/100Rankings
The Netac ZX20L 256 GB Extreme Portable SSD delivers flagship-class NVMe speeds (up to 2000 MB/s) in an aluminum, shock- and dust-resistant case, but its reliability is questioned due to reported early failures and limited after-sales support.
The Transcend ESD270 250 GB offers a pocket-sized form factor, solid 520 MB/s read speeds and built-in 256-bit AES hardware encryption, making it ideal for users who prioritize security and portability over raw performance. Its slower write speeds and lack of wireless features keep it from being a flagship performer.
| Attribute | | |
|---|---|---|
250 GB | 256 GBbest | |
520 MB/s | 2,000 MB/sbest | |
460 MB/s | 1,700 MB/sbest | |
| ↓ lower better | 35 gbest | 100 g |
36 monthsbest | 36 monthsbest | |
| ↓ lower better | 0 °Cbest | — |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Capacity(1) | ||
Storage Capacity (GB) | 250 GB | 256 GB |
Performance(3) | ||
Interface | USB 3.2 Gen 2 | USB-C 3.2 Gen 2 |
Sequential Read Speed (MB/s) | 520 MB/s | 2000 MB/s |
Sequential Write Speed (MB/s) | 460 MB/s | 1700 MB/s |
Build & Design(2) | ||
Weight (g) | 35 g | 100 g |
Form Factor | Credit-card | 2.5-inch external |
Power & Connectivity(2) | ||
Power Source | bus-powered | Bus-powered |
Included Cable Type | USB‑C to‑C, USB‑C to‑A | USB-C to C and USB-C to A |
Compatibility(1) | ||
Operating System Compatibility | Windows, macOS, Linux, Android, iOS/iPadOS, ChromeOS | Windows, macOS, Linux, Android, iOS, consoles |
Products in the top-left offer the best value (high score, low price).
Professional reviewers highlight the strong encryption and convenient one-touch backup button, while noting that raw speeds lag behind flagship models and the Android app feels unpolished.
Everyday users love the tiny size, fast backup times and built-in encryption, but they often have to reformat for certain consoles and report occasional hiccups on older USB-A ports.
Professional reviewers note that the Netac ZX20L delivers impressive raw performance thanks to its NVMe architecture, positioning it as a fast yet budget-friendly option. However, they caution that the use of a DRAM-less YeeStor controller, unbranded TLC NAND, and the absence of disclosed endurance ratings make long-term reliability questionable.
Everyday users praise the drive's speed and pocket-friendly size, often highlighting its value for casual file transfers and occasional boot use. Recurring complaints focus on sudden failures within months, data loss during crashes, and unresponsive customer service.
“Fits in my wallet-perfect for carrying work files.”
“Backed up 100GB of photos in under 4 minutes.”
“Love the encryption feature-feels secure for sensitive documents.”
