With the Fujifilm X70 being the little sister to the X100T, it shares a lot of the same characteristics. The sensor works the same, the speed of the processor is about the same, even the speed at which it writes to memory cards are all very close. The main difference is the X70 is a lot smaller and it has a wider lens.
If you're looking for the best memory card or you want the fastest memory card for the Fujifilm X70, there are only a few options. Several brands perform wildly different so it's important to find the best memory card for you camera so you never run into wait times as your buffer clears.
See the performance tests . . .