Lowest price for a Ryzen 5 4650G motherboard.
Lowest price for a Ryzen 5 4650G motherboard.
It's not exactly the same, though a fast RAM setup helps a lot. Anything could fail, so keeping spare parts is probably not the best approach. If it does break, you'll have to handle it yourself. It also includes an integrated GPU, which is significantly inferior to those in APUs, but it should still let the PC function if the worst-case scenario occurs.
That's acceptable, but the RX550 isn't a strong graphics card—it ranks lower in the RX series. The performance is likely comparable to the integrated graphics. With a high clocked DDR4 3600 memory, you can match the results. I recommend delaying the GPU purchase until you locate a suitable card or increase your budget. Instead of the RX550, consider a GTX1050 or GTX1050 Ti; some models are more discreet.