Komputerbay 256GB 1200x CF cards have been in customers' hands for weeks, and they're going for $500 or so. First one you can actually trust, I'll give them that.
Also: the market for this is people shooting RAW video with a 5D3 and magic lantern. It will only hold 50 minutes of footage. And the comparable 128GB card is $600.
mini23: 90 MB/s means 2:30 mins footage per 16 GB card or 10:00 mins per 64 GB card.I hope you video guys have a couple 100 fast cards ready at hand. When a 16 GB 1000x Lexar professional costs about 80€ you'll have to spend like €2000-€3000 only on cards (for a wedding e.g.) ...
OR you use clean HDMI output of course (is this even possible with RAW footage?).
Thank god I don't do video... ;-)
This hack is taking the IQ from a $3500 camera to what only cameras of >$15K can do. (well, maybe the Sony FS700, at $10K with the RAW recorder, could fight this too).
So, a couple of Transcend 128GB 1000x cards for $700 and you have an awesome movie-making machine with storage for 48 minutes of footage. Not bad if you ask me. But not for everybody, of course (working with these RAW files is painful).
Edit: these cards:http://www.amazon.com/gp/product/B009S61AFQ/ref=as_li_ss_tl?ie=UTF8&camp=1789&creative=390957&creativeASIN=B009S61AFQ&tag=similaar-20&linkCode=as2