Can you help me choose a power supply?

Question

Power Supply

Guys, hello. I honestly read guides, watched vidos, but did not understand anything. That is, I'm not a lazy priest, but I tried to delve into it. From parameters and tsiforok I'm already dizzy. At first I thought that the steepness of the power supply depends on the big fat number 500W. Then, delving into the guides, I realized that in order to understand the true power, you need to multiply + 12V by the number of A. Then it turned out that the manufacturer can deceive and write fake information (like then let them enter the market? O_O)

Please tell me the power supply, judging by personal experience, which will be better than what I have now. The one I have is already melting inside and periodically turns off the system if there is a very strong load (cleaning from dust helps for a while)
Here it is an old power supply that wants to rest

Grandpa

Answer 1

FSP or Сhieftec are normal brands, not sky-high prices.