Quote from: dngrhm on May 22, 2013, 06:13:55 PM
UHS-I can either support a clock of 100MHz writing 4-bits (1/2 byte) per clock = 50 MB/s or UHS104 specifies a 208MHz clock writing 4-bits per clock = 104 MB/s. The SD controller in the T4i is a Macronix MX25L6436EM2I-10G with a clock speed of 104MHz. The T4i will not support anything faster than 50MB/s. Slice and dice your video however you want. That is the (theoretical maximum) hose you have to work with.
I wonder if the T5i fixed this by using the 208MHz part?