If all you need is desktop + browser then likely any AMD card 7XXX series and newer. Keep in mind that some of features for AMDGPU such as Freesync or HDMI audi

If all you need is desktop + browser then likely any AMD card 7XXX series and newer. Keep in mind that some of features for AMDGPU such as Freesync or HDMI audio are depend on out-of-tree kernel module which is open source, but add important not yet merged code.