refuse

I contacted customer service... Hello Aaron, The pump is dual pulse, and the motherboard can only read single pulse. Double the RPM reading to get the actual pump RPM. Best Regards, Thermaltake customer service That's the answer Thermaltake gives but logic and everything I've researched would seem to go against that. I'm looking for a more scientific explanation. All research I've found on fans, reading RPMs from the tachometer wire, and tachometer pulses all have RPMs being reported as twice as fast in these situations... not half (2 pulse per revolution vs 1 pulse per revolution). Why doesn't my motherboard (that they say is only able to understand 1 pulse equals 1 revolution and not the pumps 2 pulses equal 1 revolution) then interpret it as 2 revolutions and report the RPM as double instead. TLDR; They are going the wrong way with their math, i.e The motherboard should already be reporting it TWICE as fast as it's actually going, not half.

I came here for this exact reason, haha. Asus x99-a and it's only showing around 1800 rpm for the pump. I connected the pump to the CPU_OPT and the fans to CPU_FAN. Just wanted to make sure I don't need to send this thing back. So it IS running at the ~3600 rpm and it's just being reported wrong? I keep finding this question asked but never answered