3060 has Q370 chipset and 8th gen intel cpu.  You can only upgrade within the same gen to i7-8700 or i7-8700k.  Dell has not released bios update for 9th gen cpu, although the chipset supports 9th gen cpu with bios update.  In the next model Optiplex 3070 Dell has the bios to support 9th gen cpu.  there may not be a lot of improvement going from 8th to 9th gen cpu though.  
 can i upgrade optiplex 3060 sff to i9 11th generation processor?
hello =) can i upgrade optiplex 3060 sff to i9 11th generation processor?