What does 7304 have over 7302? I am using 7302 and it is the best bios I've ever used on this motherboard. Cold boot is the fastest I've ever seen on this mother board, several times faster and it cold boots with no issue with 4 sticks of ram, 32gb at DDR 4 3733mhz. I am getting boost to 3.516ghz consistently in CineBench single thread, for random non intensive stuff I've seen it at 4.63ghz but rare and HWInfo could be off. For what ever reason I am seeing virtually normal boost as far as I can tell.
ASUS C6H bios 7302, Ryzen 3900x @ PB only, 32gb TridentZ 3200 at 3733 16-16-16-36 Samsung B (2x F4-3200C14D-16GTZSK + 2x F4-3200C14D-16GTZKW), Radeon 5700 XT Lisa Su, Intel P600 1TB + 660 2TB M.2 drives, 1600w EVGA Power and Cooling PS, Samsung HDR 144hz FreeSync monitor, Win 10 64