Ah right, so how much heat would an 80W tec put out? I've got pretty low speed 120mm fans on single heatercores, with 78CFM each, and only 25mm thickness. That's at 12V, I usually run them slower though.
This is them on:

And in my rad box:

BUT my system aint up yet so I don't know my water temps....with an 80W tec how much do you think my A64 would raise by temp wise?