im about to order my new rig and was curious, is a single MCP35x strong enough to push water through an XSPC Raystorm CPU block and a single GTX580 Classified ultra waterblock??
You can buy a flowmeter and install it in the loop. I'm not 100% sure what the best way to display the results are. The T-Balancer BigNG can monitor flow from Windows, but I bet there are cheaper options available.
Looking at the spec it has PWM signal so u can monitor the rpm of the motor from windows. That's useful because u could for example set Speedfan utility to shut down the PC very quickly if ever the pump stops working for whatever reason. I guess the pump uses 4 pin molex for power and would have a 4 pin pwm header to plug into the motherboard for speed sense. You will also get an idea of flow rate visually when u power up for the first time as u watch the bubbles moving through the loop. The pump head is 4.4 which is good and the LPH is also very good so no worries.