A: Sir, the Asrock B450M Steel Legend AMD Motherboard will be able to run 144 Hz Monitor but mainly Sir, the refresh rate depends on the monitor that is being used.
A: Sir, the BIOS of the Asrock B450M Steel Legend AMD Motherboard will be updated for you so that you can use the Ryzen 5 3600 Processor right away so that you do not have to face any kind of trouble.
A: Yes Sir, the Asrock B450M Steel Legend AMD Motherboard will be able to support the new 3rd gen ryzen 5 processor but it will require you to get a BIOS update for the motherboard.