Technical Details
| Card | Varieties | Actual max. storage capacity (mebibyte, or MiB) | Theoretical max. capacity | Max. Read Speed (MByte/s) | Max. Write Speed (MByte/s) | Read/write cycles | Low-level access | Operating voltage (V) | Controller chip | # of pins |
|---|---|---|---|---|---|---|---|---|---|---|
| CompactFlash | I | 262,144 | 128 PiB | 167 | 167 | NOR/NAND | 3.3 and 5 | Yes | 50 | |
| II | 12,288 | 128 PiB (due to LBA-48) | 167 | 167 | ||||||
| SmartMedia | 128 | 2 | 1,000,000 | NAND | 3.3 or 5 | No | 22 | |||
| MMC | MMC | 8,192 | 128 GB | 2 | 2 | 1,000,000 | 3.3 | Yes | 7 | |
| RS-MMC | 2,048 | 2 | 2 | 3.3 | 7 | |||||
| MMCmobile | 2,048 | 15 | 8 | 1.8 and 3.3 | 13 | |||||
| MMCplus | 4,096 | 52 | 52 | 3.3 | 13 | |||||
| MMCmicro | 2,048 | 1.8 and 3.3 | 13 | |||||||
| eMMC | 2 TiB | 104 | 104 | 1.8 and 3.3 | Yes | 13 | ||||
| Secure Digital | SD | 4 GiB | 6 | 6 | 3.3 | Yes | 9 | |||
| miniSD | 8,192 | 6 | 6 | 11 | ||||||
| microSD | 4,096 | 6 | 6 | 8 | ||||||
| SDHC | 32,768 | 2 TiB | 12.5/25(HS) | 12.5/25(HS) | 1.8 and 3.3 | Yes | 9 | |||
| miniSDHC | 4,096 | 12 | 12 | 11 | ||||||
| microSDHC | 32,768 | 10 | 10 | 8 | ||||||
| SDXC | 131,072 | 2 TiB | 104 | 104 | 1.8 and 3.3 | Yes | 9 | |||
| Memory Stick | Standard | 128 | 128 MiB | 2.5 | 1.8 | 3.3 | Yes | 10 | ||
| PRO | 4,096 | 2 TiB | 20 | 20 | 3.3 | |||||
| PRO Duo | 32,000 | 20 | 20 | 3.3 | ||||||
| PRO-HG Duo | 32, 000 | Actual: 30 Theoretical: 60 |
Actual: 30 Theoretical: 60 |
3.3 | ||||||
| Micro (M2) | 16,384 | 32 GiB | 20 | 20 | 1.8 and 3.3 | |||||
| xC | 2 TiB | 60 | 60 | 3.3 | Yes | 10 | ||||
| xD | 512 | 512 MiB | 5 | 3 | 3.3 | No | 18 | |||
| Type M | 2,048 | 8 GiB | 4 | 2.5 | ||||||
| Type H | 2,048 | 8 GiB | 5 | 4 | ||||||
| Type M+ | 2,048 | 8 GiB | 6 | 3.75 | ||||||
| USB | Full speed | 131,072 (2009) 262,144 (2010) | No hardware-limit | 1 | 1 | 5 | Yes | 4 | ||
| High speed | 40 | 40 |
Read more about this topic: Comparison Of Memory Cards
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