[airspirit]

Oh, and one BIX should be able to very comfortably handle the heat output of your system. A BIX2 would need very little CFM of air over it. Two in parallel might be able to straight radiate without fans if they're in the open. The high end iwakis are great if you're using 3/4" hose for some psycho setup or if you're doing more than one machine, but odds are you're not going to see much better cooling than if you went with a Danner Pondmaster 700 or an Eheim 1250 or something. The reason is that while you're pushing more water through the system, and it can be absorbed more readily by the water because of that, you're also adding a HUGE amount of heat into the water from the pump. When you're talking about 115-140W of heat from the pump, well, that's more than your proc and NB combined are releasing. While getting a better rad or block will help, there is a point of diminishing returns when it comes to pumps. We all tout flow rates and head values as some sort of virtual d!ck measuring contest, but unless your system is using an extremely resistive heater core or you are running the NB and GPU and CPU all in series (foolish, if you ask me), you really don't need it.

Run 5/8" out of the pump to a Y. Run the GPU/NB in one parallel loop with 3/8" tubing, and the CPU in another parallel loop with 1/2" tubing. Attach the CPU to one rad and the GPU/NB to another (you were going to use two, right?). Join the loops at a Y right before the pump. It'll work, since the GPU and NB blocks are more restrictive, anyway. It doesn't take mastery of anything to figure it out, just a little bit of common sense. Running them all in series can put the last chip in the series at risk since it'll be being cooled by heated water. Plus, it is a biznatch for flow.