SanDisk’s CFexpress 4.0 Cards Push Speed Limits
By Jennifer P
In this article by Andy Stout for Red Shark News, SanDisk unveils a new lineup of professional memory cards, headlined by its latest Extreme PRO CFexpress 4.0 Type B series alongside updated V90 and V60 SD cards. The announcement comes at a time when memory prices are rising sharply, making both the performance gains and pricing structure especially relevant for video professionals and content creators.
The CFexpress 4.0 Type B cards represent a major leap in performance, delivering up to 3700 MB/s read and 3500 MB/s write speeds thanks to a PCIe Gen 4 interface—roughly doubling the throughput of previous-generation CFexpress 2.0 cards. However, performance varies significantly by capacity. The higher-end 2 TB and 4 TB cards achieve the top speeds with strong sustained write performance and VPG1600 certification, while lower-capacity options like 128 GB and 400 GB see a notable drop in sustained write speeds. This distinction is critical for filmmakers who rely on consistent performance to meet cinema-grade recording standards.
Beyond speed, SanDisk has added durability and efficiency features such as SmartIdle for thermal management, along with robust physical ratings for drops and bending. Pricing, however, is a major talking point: the 4 TB card reaches $1799, which may seem steep but actually offers better value per terabyte compared to smaller capacities. This creates a clear incentive for professionals to invest in higher-capacity cards if their workflows and budgets allow.
The updated SD card lineup also pushes boundaries, with both V90 and V60 cards now reaching up to 2 TB capacities. The V90 cards are designed for high-end use cases like 8K video, offering faster sustained write speeds, while the V60 cards target prosumer workflows such as 6K video and high-resolution photography. Interestingly, the price difference between the two tiers is relatively small at the top end, making the upgrade to V90 a more compelling option for users needing higher performance.
Finally, the article places these launches within the broader context of a rapidly shifting memory market. Prices for NAND and DRAM have surged due to increasing demand driven by AI infrastructure, pushing costs higher across the board. Despite the high price tags, SanDisk’s new cards are largely in line with industry forecasts, suggesting that while expensive, they may not be overpriced relative to where the market is heading.
Read the full article by Andy Stout for Red Shark News HERE
Learn more about SanDisk HERE