ZeroTherm is a relatively new name when it comes to PC cooling. I’m sure most of you have not heard of them. Well today we are talking a look at ZeroTherm’s BTF90 CPU cooler. It is an all copper CPU cooler with a set of 4 heatpipes that make their way through the array of fins. The fin design is something I have not seen before. That makes me curious to see how well the BTF90 will perform.