I think I got my pump settings dialed in.

I have it set so the lowest voltage the pump gets is 7.1V, on the aquaero lcd (DMV reading is 7 volts). The highest voltage when the aquaero lcd reads 12V, is 11.7V on the DMV, since there is voltage drop from the transistor (VCEsat).

I vary pump voltage based on the reading from the water temp sensor. Here's some graphs of my pumps voltage vs. time vs. temp.

1st one is from idle, to fully loaded (all 4 cores, and GPU). The beginning portion of the graph is from trying adjust stuff


2nd one is after turning off the loads on the CPU and GPU, so the water temp is slowly cooling, and the pump is slowing down too.


3rd one is when the pump has reached it lowest voltage setting.


The heatsink on my transistor never gets hot enough where I have to pull my finger off, if i press a finger on it. so far I'm happy with my mod