ProGrade's new 320GB, 640GB CFast 2.0 cards are its fastest yet, but still fall short to CFexpress

The CFast 2.0 might be all but dead, but ProGrade is determined to keep the format evolving for those few cameras that still use the large memory cards. ProGrade has announced its new 320GB and 640GB CFast 2.0 Cobalt memory cards, which offer read and write speeds up to 550MB/s and 520MB/s, respectively. Sustained write speeds are quoted at 470MB/s, according to ProGrade and the cards are both V130 certified, meaning write speeds will never drop below 130MB/s. The CFast 2.0 specification was rel...