Head to head
ProGrade Digital CFexpress 4.0 Type B Iridium vs Delkin BLACK 4.0 CFexpress Type B
Our pick
Delkin BLACK 4.0 CFexpress Type B
CFexpress Cards


Product photographs. Not to scale.
What ProGrade Digital CFexpress 4.0 Type B Iridium offers
Choose the ProGrade Iridium 1.6TB when a supported Type B camera needs more room between card changes than a 1TB card offers. It also carries VPG400 certification.134
2 models / at a glance
Key differences
What differs
| Specification | ProGrade Digital CFexpress 4.0 Type B Iridium | Delkin BLACK 4.0 CFexpress Type B |
|---|---|---|
| Capacity | 1,600 GB (1.6 TB)3 | 1,000 GB (1 TB)1 |
| Max write speed | 3,000 MB/s3 | 3,130 MB/s2 |
| Max read speed | 3,550 MB/s3 | 3,630 MB/s2 |
More details
| Specification | ProGrade Digital CFexpress 4.0 Type B Iridium | Delkin BLACK 4.0 CFexpress Type B |
|---|---|---|
| Card type | Type b3 | Type b2 |
| VPG rating | VPG4004 | VPG4001 |
| PCIe generation | 44 | Not published |
| Warranty length | 3 years4 | Not published |