In general SD Cards (Secure Digital Cards) are handy for mobile storage.
SD Cards from 4 GB on are called “SDHC” cards (HC = High Capacity).
Speed Classes of SDHC Cards
Speed Classes were introduced by the SDHC standard….
Class 4: Committed minimum Write Speed 4 Mbyte/s — Typical reading speed 26x (26 x 150 KByte/s)
Class 6: Committed minimum Write Speed 6 MByte/s — Typical reading speed 40x (40 x 150 KByte/s)
Class 10: Committed minimum Write Speed 10 MByte/s — Typical reading speed 66x (66 x 150 KByte/s)
Prices of SDHC Cards
Today (Jan 2015) I see theese appox. prices:
8 GB Class 10: 8 EUR
16 GB Class 10: 10 EUR
32 GB Class 10: 18 EUR
64 GB Class 10: 32 EUR
128 GB Class 10: 80 EUR
Primary use of SD Cards
For my digital Cameras (Panasonic DMZ FZ28, Sony Nex 5R)
Apple iPad CCK (camera Connection Kit)
Smartphone Mobile Telefone Nokia N8
SD Cards for Archiving
xxxx comments to come soon xxxx