Ryzen 5900x is a high-performance processor model.
Ryzen 5900x is a high-performance processor model.
In short, your CPU should be okay. The issue seems to be with the water-cooling loop setup and the connection to the CPU fan header, not a problem with the CPU itself.
RIP 500$ CPU you should be okay as long as you have the cooling plate installed. It should manage most light tasks with just that.
It will function perfectly as long as fluid flows. If water isn’t moving, it will stop within about two minutes due to overheating safeguards. You’re not required to connect the CPU fan header unless you prefer, or if running cables in a different path makes more sense. Simply turn off monitoring on that header in the BIOS.
I'd be surprised if anything failed. As long as water stays out of the chip, everything should be okay. The thermal limits would have already been reached before any issues arose, and since the pump was active, there was no chance for thermal problems to occur. Keeping the fluid flowing means you're safe.
I was hoping it wouldn't fry, but thank you. At least I'm feeling better now that I didn't nearly damage my CPU.
Essentially, you need to attempt to damage a modern CPU because they come with various safeguards. If temperatures rise too high, it will reduce performance and possibly shut down before any real harm is done. These defenses can usually be disabled through the BIOS settings, provided the system supports it.