interesting thing for us/settings GH2, for example SDHC667 (667x) but minimum 16MB/s so min. 16x8=128Mbit/s !!! for now already on the market and selling on xstra.eu see link below: "Pretec 16GB SDHC Card 567x Class 16" for €45,55 and there is 32GB version of this SDHC. BUT also on pretec the website there is SDXC 64GB, the cards all Class16, AND NOT the older versions (class10, 6, 4 etc.), here are the links:

http://www.pretec.com/news-event/press-room/item/press-room/worlds-fastest-cf-and-sd-cards-from-pretec http://ultimatephotographyguide.co.uk/pretec-announce-worlds-fastest-compact-flash-and-sd-cards/ http://www.ephotozine.com/article/pretec-announce-world-s-fastest-compact-flash-and-sd-cards-18707 http://www.pretec.com/products/memory-cards/sd-card

The minimum thing of Class16 means minimal trasfer speed of 128Mbit/s maybe this can help us the minimum limit (on the lower side) is 128Mbit/s AND up to it's higher limits (specifiation of Pretec).

Now we can do guaranteed minimum of 128Mbit/s ??!! Sounds good, BUT the also the "64GB SDXC 567x" and the upcoming "16GB SDHC667 667x". Maybe helpfull for "GH2-settings" and data is not lost when power is down!!!