Hello. I will soon be setting up a Z590 FTW rig. I notice in the manual a warning in red bold all caps:
"
ALL FAN HEADERS HAVE A MAXIMUM POWER LIMIT OF 2AMP @ 12 VOLTS (24WATTS). EXCEEDING THIS LIMIT WILL CAUSE IRREPARABLE DAMAGE TO THE BOARD."
Ok. I'm not an electrical engineer so please can someone check this out for me, because I seem to have confused myself:
I'm planning on plugging in the 3 PWM intake case fans on a triple splitter into one motherboard PWM fan header. The fans are Corsair LL120 RGB fans which draw 0.3A and operating voltage is 7-13.2V (13.2V being on 100% rpm). AFAIK, Amps x Volts = Watts, so 0.3A x 13.2V = just under 4W on full speed per fan. Based on this data;
3 fans would be 3 x 4W = 12W which is fine
3 fans would be 3 x 0.3A = ~1A which is fine
3 fans (on full speed) would be 3 x 13.2V = ~40V which apparently is not fine... but I think I'm doing something wrong here, because even one fan is rated up to 13.2V which is more than the stated 12V warning... so which part matters? The Watts, the Amps, or the Volts - I'm guessing Volts don't add up cumulatively? Sorry for my ignorance, just got myself a little confused, particularly when I've run 2 fans on a splitter in many builds. ..or is only the total Amperage that matters?
post edited by Nereus - 2021/05/31 10:58:25