Question: are sd cards faster than usb?
Answer: So, in general, USB 3 should be nearly twice as fast as the fastest SD Cards. However, a USB 3.0 bus often runs at speeds of 1/3 to 1/2 of the design maximum. ... For a very fast 300 MB/s SD Card, you can expect to pay about 4 times as much per GB as you would a 100 MB/s card.