[Phuzun]

Right, you are cooling water that is only sitting in the water block for a short amount of time. It wont be able to cool as effectively. If its in the closed loop and has water in a res then its just cooling water that cant go any where. If he had a metal res that had a gallon of water or whatever and it wasnt going through a pump with no time to cool down, then it would do something. The reason why we pump water through a block so fast is to make sure to get alot of water to cool a processor. But if you are trying to run the entire sink through that, then it wont cool down. It will just keep cycling to fast to do anything effectively.