THE POWER SUPPLY, this component is so important, it is basically the conexion between you house´s electricity and your PC, it changes the power from AC to DC for example and if something happened to the power as a high peak of electricity for example, the power supply can sacrify itself to protect the other components, it means it regulates the power that can go on your PC . And that´s why I basically choosed the MSI MAG A750GL PCIE5, Fully Modular Compact Gaming 750W Power Supply, 80+ Gold, ATX 3.1 & PCIe 5.1 Ready, Native Dual-color 12V-2x6 cable, wich you can buy from here on Newegg for 100€ Main article