That's a poor PSU that provide 432W on the 12V rail in reality, which is what powers modern hardware.
It would be best if you bought a new PSU as well, advising these:
First post from this thread
Below you will find MY standard list of recommended power supplies and beyond that this thread is intended as a landing place for questions or discussions regarding specific units, platforms or related PSU tech, all of which are all welcome to be discussed here. If it's related to power supplies...
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and the tier list here that you can pick from tier B and above, or if you are under an extreme budget, tier C.
PSU Tier List 4.0 rev. 14.8 (outdated) Last Update: 12-07-2021 Legend : Gray - EoL/obsolete and/or otherwise not recommended for purchase. Green - small form-factor (gold and blue colors are disregarded due to scarcity of SFX PSUs) Gold - best units in the tier (includes requirements for blue...
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