lol i accidentally selected that as the answer the fans are working, i dont know how to check if the pump is working (i felt it it seems like it is) and i just re installed it to be sure i did it right, im too scared to OC because the voltages confuse me (the 4.0 ghz seems like enough)
You should be able to tell if the pump is running or not, from what i've read the pump is some what louder then the fans, although that would depend on what rpm the fans are running i guess.
I have never owned one so not 100% sure about that