Amazon is not specific with image resolutions

Hi everyone, I’m designing A+ Content for one Amazon listing and I’m confused by the resolutions. For example I want to design the background for the “From the Brand” section and Amazon only says minimal requirements. It lists 1464px x 625px. However, that is not that big considering today’s monitor sizes. I’m wondering, what is the optimal resolution to upload at? Maybe two times bigger, three times bigger?