I'm aware that the safest approach is to stick with the PSU cables that come with a new unit. However, I have some modular cables from an old build that I'm considering reusing in my new setup. My current power supply is a Corsair RM 750x, and the new one is an NZXT C1000. The cables I possess for the RM 750x are either these original ones or compatible types; however, I don't have the exact model numbers since they've been part of my build for over six years. I've heard that others have had luck reusing cables, but I'm looking for advice on whether it's safe to do so in my situation, especially given that some users mentioned the RM and NZXT models may share the same pinouts.
5 Answers
Unless you're absolutely sure of each pin's voltage mapping between the two power supplies, I wouldn't recommend it. Even if documentation says the outputs match, it's risky without a multimeter to verify it. Just avoid the gamble—your components aren't worth the potential fireworks!
It's generally a bad idea to use old PSU cables with a new power supply. The different models often have incompatible pinouts, which can lead to serious damage or even danger. I checked a compatibility list, and the NZXT C1000 is specifically noted as not compatible with the Corsair cables. Better safe than sorry; stick with the cables that come with your new PSU.
The hard truth is that manufacturers can change pinouts even within the same models over time. Your NZXT might have different connectors than the Corsair, and we don’t want to test that out. I’d err on the side of caution and stick with what’s recommended.
Honestly, it's best to go with the new cables designed for your NZXT power supply. It's not really worth the risk to try and make old cables fit when there’s a chance they could mess up your whole system.
Using old cables is a big no-no. Just because someone else got lucky doesn't mean you will. The pinouts may look the same, but they could lead to problems that result in blowing up components. Just use the right cables and save yourself the heartache.
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