ProGrade Digital Cobalt CFexpress Type B card review

ProGrade’s Cobalt CFexpress card was used to set Nikon’s benchmark burst depth figures for the Z 9

ProGrade Digital Cobalt CFexpress Type B card review
(Image: © Angela Nicholson/Digital Camera World)

Digital Camera World Verdict

It might be new to the market but ProGrade Digital has made quite an impact. The company aims its Cobalt CFexpress cards at professional photographers who need plenty of capacity as well as speed and don’t mind paying for it. However, it also offers more modestly prices CFexpress cards for less demanding users who have no plans to shoot 8K video or 45Mp images at 20fps.


  • +

    Up to 650GB capacity

  • +

    Nikon’s benchmark brand

  • +

    Solid performance


  • -

    Only available in 2 capacities

  • -

    Smallest capacity is 325GB

  • -

    High price

Why you can trust Digital Camera World Our expert reviewers spend hours testing and comparing products and services so you can choose the best for you. Find out how we test.

ProGrade Digital was launched in February 2018, so it’s a comparative newcomer to the memory card market, but its founders have a background in older memory brands and it has quickly gained recognition. So much so that Nikon used ProGrade’s Cobalt CFexpress cards to obtain the quoted burst depth figures for the Nikon Z 9.

ProGrade Digital makes two lines of CFexpress Type B card, the Gold series cards which have read speeds of up to 1700MB/s and write speed of up to 400MB/s, and the Cobalt cards which have an NVMe PCIe 3.0 x4 interface which helps them to deliver the same maximum read speed as the Gold card but much faster write speeds of 1500MB/s. These speeds make the Cobalt cards suitable for recording 8K footage or high bit rate and raw video.

Thank you for reading 5 articles this month* Join now for unlimited access

Enjoy your first month for just £1 / $1 / €1

*Read 5 free articles per month without a subscription

Join now for unlimited access

Try first month for just £1 / $1 / €1

Angela Nicholson

Angela has been testing camera gear from all the major manufacturers since January 2004 and has been Amateur Photographer’s Technical Editor and Head of Testing for Future Publishing’s photography portfolio (Digital Camera MagazinePhotoPlus: The Canon MagazineN-PhotoPractical PhotoshopPhotography Week and Professional Photography magazines, as well as the Digital Camera World and TechRadar websites). She is the founder of SheClicks - a community group that encourages and supports female photographers.