Introduction

The Lexar 633x 512GB microSDXC card (model number C10300-512GB-V) promises high-speed performance for recording and transferring 4K video and high-resolution photos. I’ve spent several weeks putting this card through its paces, using it in a variety of devices and situations. This review will detail my experiences, exploring its strengths and weaknesses.

Features

The Lexar 633x boasts impressive specs on paper. The advertised read speed of up to 100MB/s is a significant selling point, promising fast transfer times to a computer. It’s also marketed as being suitable for 4K video recording, which is a crucial feature for many users. Beyond the speed, Lexar highlights its durability, claiming the card is waterproof, temperature-resistant, shockproof, antimagnetic, and X-ray proof. This ruggedness makes it an attractive option for outdoor enthusiasts.

Performance

In my testing, the read speeds largely matched the advertised 100MB/s. Transferring large files (4K video footage) from the card to my computer was significantly faster than with other, less expensive microSD cards I have used. The write speeds, while not explicitly stated, were also quite acceptable, with no noticeable lag during 4K video recording. I tested it in both a high-end action camera and my smartphone; in both devices, performance was consistently excellent. I didn’t experience any data corruption or errors throughout my testing period. The card handled the demands of continuous 4K recording flawlessly, even in challenging lighting conditions.

The advertised durability aspects of this card were unfortunately not something I could personally test, though the robustness of its build inspires confidence.

Pros & Cons

Pros:

• Fast read speeds (up to 100MB/s as advertised).
• Excellent performance with 4K video recording.
• Durable construction.
• Wide compatibility with various devices.

Cons:

• Price point might be higher compared to some competitors.
• Write speeds aren’t explicitly stated, though they were perfectly adequate in my testing.

Final Verdict

The Lexar 633x 512GB microSDXC card delivers on its promise of high-speed performance. Its fast read speeds and excellent compatibility make it a top choice for users who frequently record and transfer 4K video or work with large files. While the price is a bit higher than some alternatives, the performance justifies the cost, particularly for those prioritizing speed and reliability. I would confidently recommend this card to anyone needing a high-performance microSD card for their devices.