Mark II + raw video + full hd

[markzoi]

Hi, I'm new and about to install ML in my Mark II.

My question is: Can I record video RAW direct in full HD 1080 x 720 without scaling? If so what flp can i can reach ?  25 or less?

if not why I have to rec before in higer res and the scaling??

For my canon mark II a CF x 1000 is to fast should I buy a 400x or 600X

Thank you very much

MArk