Interestingly enough,
I was looking at the reviews of the EK Supremacy EVO compaired to their previous flagship. They claimed that temps were 2C lower with the EVO. As I was all about aesthetics I went for the EVO anyway, and their claim is true. I noticed a 2 degree drop in temp which might be small to some but still impressive to me. Just dont waste time getting the EVO gold unless that is your theme. There is no difference in performance at all between Gold/copper/nickle plated EVO.