>>4480647>for Canon R8V60 for the dw faghettaboutdit / 10-bit log
UHS Class 3 for 8-bit (i.e. not log)
I personally would just get a V60 card. You don't need V90 until you're doing insane shit like 4k120 or 8k60. V30 theoretically could be enough for 4k60 but I wouldn't cheap out on the extra $20 it would take to get a V60 card when I just spent several thousand on the body.
The math iirc is correct as long as they're measuring bitrate in KB not Kb (I've seen materials use both).