I have a question relating to my future Tcherenkov Blue OilPC build (see sig). I've been playing with the thermal parameters a bit, trying to get an idea of how feasible full passive cooling is and to plan the radiator dimensions. I know the math well enough now. However, I have a bit of a problem: I don't know how to estimate the amount of heat generated by the entire rig. The TDP is widely available for CPUs, and for the PSU it's easy enough to calculate from the stated efficiency [TDP=output power x (1-efficiency)]. However, I don't know where to find thermal data on other components- GPU, mobo, drives, etc. Does anyone know where I could find suck information, or any of other methods of figuring out how much heat the entire system is producing? Google is not very helpful. I created a separate thread so that other can find it more easily.