Are aluminum heatsinks better then copper heat sinks?
Amazon.com: Aluminum Heat Sink, 11.8"X5.51"X0.79" Heatsink Radiator Circuit Board Cooling Cooler 19 Fins Heat Sinks for High Power LED Light : Electronics
Amazon.com: Awxlumv Large Aluminum Heatsink 5.9" x2.71" x 1.41" / 150 x 69 x 36mm Heat Sinks Cooling 27 Fin Radiator for IC Module, PC Computer, Led, PCB : Electronics