Which heatsink kit for Raspberry Pi will be more efficient?

Question

Cooling systems

Hello!
I bought two types of heatsinks for RPi on Ebay. One set is copper, the other is aluminum. Initially, it was obvious to me that copper radiators would be more efficient in cooling, but looking at them with my own eyes, doubts arose, since the surface area of ​​\u200b\u200bthe elements that remove heat from aluminum radiators is many times higher. I am attaching a photo of the radiators to my question, maybe someone has already come across and will say unequivocally which of the kits will cool the RPi more efficiently?
Thank you!

Answer 1

There is no special and fundamental difference in this case. If you really want to get confused, then the lower right in the first picture. Here, the thermal interface will be more important than the type of radiator.
Instead of duct tape, which is usually not thermal at all, find hot melt adhesive. In extreme cases, thick kpt8, also keeps well