Hey there! I recently came across a beefy fan cooler that requires 12V and 3.0A of power while going through some tech stuff I got from my uncle. It's quite a powerful fan, and I found out that my motherboard, the EVGA Z170 FTW, can only handle fan headers that provide up to 1A. So, I'm trying to understand: Am I missing something with this fan cooler's power requirements? Is there a way for me to still use it, perhaps with an adapter to connect it to Molex or SATA connectors from my power supply? I hope this doesn't sound too silly, but I'm a bit of a newbie and don't want to risk damaging my PC. Any advice would be appreciated!
3 Answers
That fan is more suited for industrial use or branded PCs with better power management. I once used a fan like that in a makeshift cooling system, powered directly from an old PSU. It can get very noisy and powerful—around 224 CFM. I'd suggest keeping it for something else, like a garage project or workbench setup. It’s probably not a good idea to use it in your case—better to stick to regular fans that fit your system's specs.
You really shouldn’t connect that fan to your motherboard; its startup draw is higher than 3A. It's going to be super loud as well. If you really want to use it, you can hook it up via Molex without any issues, but I wouldn’t bother.
Definitely avoiding the motherboard then! I'll give it a try with the old PSU first and see how noisy it really is. Might find a good use for it outside my main rig.
You can definitely power that fan directly from your PSU! Just keep in mind that it's pretty loud—around 64dB, so it’ll sound like a jet engine! You might want to hook it up with an adapter and test it out, but think carefully before connecting it to your main system.
Yeah, I’d really recommend trying it out with an old PSU first. If the noise is that bad, it might not be worth using inside your PC.

Good point! I’ll definitely consider saving for some regular case fans instead. I don’t want to risk anything damaging my setup.