22:42 <zmatt> set_: 1. the A72 is a much faster processor than the A53 at the same clock frequency (it does more work per clock cycle)

22:43 <zmatt> 2. some things can't be parallelized hence increasing core count may not help as much as you'd hope

22:44 <zmatt> 3. boot time is often strongly dependent on how fast it can load data from disk/emmc/sdcard to ram

22:49 <zmatt> 4. the max data rate for sdcard is typically only half that for emmc (because sdcard uses 4 data lines and emmc 8 data lines), although it will depend on the exact transfer speeds supported by host and card, and whether or not the card can actually keep up with that transfer speed