Amd ryzen 9 3900xt vs ryzen 7 5800x3d July 8, 2019 16 32 64 128 Amd ryzen 9 3900xt vs amd ryzen 7 5800x3d specs Ryzen 7 5800x vs 9 3900x Amd ryzen 7 5800x3d vs amd ryzen 9 7900x3d Amd ryzen 7 5800x vs 7 5800x3d