| Acronym | Capacity | FS | Spec | Compatibility | Name |
|---|---|---|---|---|---|
| SD | 128MB-2GB | FAT16 | SD, SDHC, SDXC | ||
| SDHC | 4-32 GB | FAT32 | SDA 2.0 | SDHC, SDXC | High Capacity |
| SDXC | 64GB-2TB | exFAT | SDA 3.0 | SDXC | Extended Capacity |
Ultra High Speed, Phase I (UHS-I): * 50MB/s (UHS-50) * 104MB/s (UHS-104)
Ultra High Speed Phase II (UHS-II): * 156MB/s * 312MB/s
SD Speed Class (a number inside "C" symbol) write speed:
| Class | Min Speed |
|---|---|
| 2 | 2MB/s |
| 4 | 4MB/s |
| 6 | 6MB/s |
| 8 | 8MB/s |
| 10 | 10MB/s |
UHS Speed Class (a number inside "U" symbol) write speed:
| Class | Min Speed |
|---|---|
| 1 | 10MB/s |
| 3 | 30MB/s |
Video Speed Class (a number after "V" symbol) write speed:
| Class | Min Speed |
|---|---|
| 6 | 6MB/s |
| 10 | 10MB/s |
| 30 | 30MB/s |
| 60 | 60MB/s |
| 90 | 90MB/s |
Note
UHS-I bus interface can only support V6 to V30 speed class memory cards. UHS-II is required for V60, V90.
Express Speed Class (a number after "E" symbol) write speed:
| Class | Min Speed |
|---|---|
| 150 | 150MB/s |
| 300 | 300MB/s |
| 450 | 450MB/s |
| 600 | 600MB/s |
Video resolution minimum requirements:
| Video resolution | Speed class |
|---|---|
| 640x480 (SD) | C2, C4, U1, V6 |
| 1920x1080 (FullHD) | C6, U1, V6 |
| 4k | C10, U1, V10 |
| 8k | V60 |