I recently bought Lenovo E858 which uses Ryzen 7 with RX Vega 10 graphics. I am struggling to find information on what is the maximum supported external monitor resolution by this integrated video. Can anyone help me with this info?
Most of those are directly supported by the OEM, in your case Lenovo. They should be able to answer your question. There is no way of knowing from this end as it would depend on what interface they implemented and what connections you are using. Your best bet is Lenovo support or your owners manual.