If we are talking about original arduino uno, as in https://www.pololu.com/product/2191, then cable should not matter - the converter is on the board, the cable is dumb.
The knock-off often use ch340 chip (which is super annoying as it has no serial number of any sort), but even that chip can be pretty fast if placed on the well designed PCB - I regularly upload 1MB firmware files to esp8266 at 230400 using that chip.
The knock-off often use ch340 chip (which is super annoying as it has no serial number of any sort), but even that chip can be pretty fast if placed on the well designed PCB - I regularly upload 1MB firmware files to esp8266 at 230400 using that chip.