Lexar Professional CFexpress Type B Card DIAMOND Series Review

The Lexar Professional CFexpress Type B DIAMOND Series represents the pinnacle of removable media performance, aimed squarely at creators working with the most demanding modern cameras. With the introduction of the CFexpress 4.0 standard, these cards offer staggering read and write speeds that can easily handle any workflow you throw at them, from high-bitrate 8K RAW video to sustained, high-resolution photo bursts. The performance is undeniable and future-proofs your media for the next generation of camera technology. It’s a tool built for professionals who cannot afford to have a memory card be their workflow bottleneck.

However, this top-tier performance comes at a significant cost. The DIAMOND Series cards are among the most expensive on the market on a per-gigabyte basis, making them a serious investment. It is also critical to understand that achieving the maximum advertised speeds of the CFexpress 4.0 models requires a compatible camera and card reader, which are not yet ubiquitous. While the VPG400 certification provides peace of mind for high-end video production, the sheer speed and price make this series overkill for all but a select group of working professionals. It is a premium product for a premium price, delivering performance that many users simply will not be able to take full advantage of yet.