I am using a MCP 655 w/ custom EK top right now. I think putting a 3x120 radiator, CPU block, video card, and chipset is a bit too much. Though temps are fine, I think they can be better. Thinking of getting a whole new pump or adding one in. Won't be doing dual loop because honestly that would look cluttered and ugly. If I run two pumps, im definitely going to run one right into the other because running it to a block and back to another pump looks silly. At any rate should I just add another MCP 655 pump to the combo? or add a MCP 355 w/ custom top. I don't know about mixing pumps though. That or a whole new pump. Two pumps is clunky in its own way since I would need to figure out where to hide it. Is the MCP 355 w/ better top much better? People are giving mixed adviced because they are biased towards the pump they own.