These cards are of the same brand, both are type "SD HC", both also have the little 10 in a circle (which if I have understood things correctly is some measurement of the speed of the card). But the left card also says 90MB/s, has a "1" inside a "U", a Roman numeral "I", and says 600X.
I'm doing burst photography, and so would one of these be better for that than the other?