I see so many ways of testing waterblocks, like CW. Why aren't the same ideas applied to heatercores/radiators. I know the rule of thumb is bigger is better (if space allows) but what about for heat dissapation. I was thinking that C/W could be used, but I cannot assume how well it will measure since the heat of the inlet water is determine by how efficiently the waterblock transfers heats. I know there is probably something out there I don't know. What would you guys use to test how efficiently a heatercore dissipates heat.