Make. The RX 6400 small would not require any additional electrical power from your PSU and might depend entirely on the ability sent through the PCIe slot (75W). You must change the case and also the PSU. That video clip card requires a 450W PSU bare minimum and is also https://raymondjpwdi.thezenweb.com/hp-prodesk-600-g3-core-i5-an-overview-65580856