Enisada - Answering your original question, your water temps should not go up much at all. But then also there is no real reason for watercooling the chipset. Even if you overclock, the chipset doesn't really require watercooling.

Guys - There is a difference between thermal conductivity and specific heat capacity. Tmod, you gave thermal conductivity statistics. Here are the specific heat capacities of some metals.

Aluminum - 900
Copper ~ 385
Silver - 232
Gold - 128

The specific heat capacity of metal is how much heat energy it takes to heat 1 kg of that metal by 1 degree C. Therefore for a heat sink, you want a higher number ie it takes more energy to heat up the heatsink, cools the CPU better. Thermal conductivity is a measure of how much heat the metal is able to transfer through it (pass on) and for this you are right, the higher the number the more conductive the substance. This combination is why swiftech made/make their heatsinks with a copper base and aluminum fans, the copper transfers the heat better to the aluminum, which holds the heat better (due to the higher specific heat capacity). This is also why you see silver plated copper or aluminum heatsinks.