Chassis Fan Speed Read 3000 rpm+

[chivu007]

My chassis Fan 5 speed read is above 3000 rpm. The 4-pin head is connected with 3 Nocture PWM fans (1300 rpms) using a splitter.
Is this the read for total rpms for all 3 fans?

 

[Martin]

It's because of the splitter, it affects pulse counting for RPM measuring.

 

[chivu007]

So basically it's add up of all three fan speed?

 

[Martin]

Most likely there's some summing up, but not exact A+B if pulses from both fans coincide.