Amd cpu ryzen 9 7900x am5 4.7 ghz 64 μβ July 8, 2019 16 32 64 128 Am5 ryzen 9 7900x Amd ryzen 9 7950x 4.5 ghz 16-core am5 processor Amd ryzen 9 7950x - 16-core 4.5 ghz Amd ryzen 9 7900x3d test