Rx 6600 xt ryzen 5 7600x July 8, 2019 16 32 64 128 Ryzen 5 7600x rx 6600 xt bottleneck Rx 6600 xt ryzen 7 5700g Rx 6660 xt ryzen 5 5600x Rx 6800 xt + r5 7600x Ryzen 7 5700g radeon rx 6600 xt Ryzen 5 6600 xt