Hello all Hope someone out there can help. I am just about to build my new watercooling system. Most of the components are all Swiftech (Except the Radiator) Just looking at the pump - I got the MCP655 pump but looks like I got the version with the variable speed and not the RPM Sensor. From what I have read this pump can go slightly faster - but the questions are: 1. Can you add a RPM sensor into the loop? 2. How will the Mother board react not having a sensor attached to it? Using Asus P6TD Deluxe board. Many thanks. eon