I ordered this SD card. So, we know for absolutely sure it won't work in the 5D III? If so, I gotta return it!
It's an awesome card and will work.
Your paying extra for the speed though and apparently it won't be an added benefit for you.
So stupid so so so so stupid. I have to wonder if it was an engineering decision or a money decision.....
So perhaps the card is a bit like putting a supercharger in your grandmother's car. I just compared the 5 d mark 3 to grandmother's old buick! I bet that's a first.
Thank you and a perfect analogy.