Do your homework. How many watts do you need? GPU, CPU, overclocking? HHD, SSD, fans, pumps and LEDs. Example. AMD Ryzen 7 2700X consumes 105W without overclocking. Then add 225W for the RX590. When I used parts of max power for my build. I found that I needed 375 watts for everything. How many amps on the 12V rail? You will always need at least 30. Always take more than your max to keep your PSU running in a comfortable range. So I have 500 watts. If you want, instead of doing all the research, you can find websites that have calculators. EVGA Pcpartpicker Corsair etc. That is also important, count and check the connections. A GPU is ideal for this power supply.
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