ProGrade Digital’s Cobalt line of CFexpress type B cards boasts a rugged design and high performance. The metal enclosure provides extra durability, making it ideal for photographers who work in harsh conditions. Available in capacities ranging from 165GB to 650GB, the Cobalt line delivers read/write speeds that are among the best in the industry.
Peak write speed for these cards is expected to be around 830 MB/s, while sustained write speed hovers around 593 MB/s. This performance is significantly faster than even high-end SD cards, making it an excellent choice for professional photographers and videographers.
However, it’s important to note that the Cobalt line comes with a high price point, and the lower-capacity type B cards might not perform as well. The 165GB version could be a great deal for its speed, especially when used in cameras like the Nikon Z6II or Sony A7IV that don’t produce super large RAW files. If you’re looking for a dependable CFexpress type B card or you’re just getting into the format, the ProGrade Digital Cobalt line is definitely worth considering.
