Which Heatsink is better?

Smadaw

Honorable
Jan 16, 2014
26
0
10,540
Phanteks U-Type Dual Tower Heat-Sink CPU Cooler

OR

Phanteks C Type Single Tower Cooler

One is shaped as a U and the other a C the C has 5 8mm heatpipes leading into one set of fins and the U has 4 6mm leading into 2 different set of fins so which one would cool better? I know there might not be to big of a difference but would like to know! Thanks everyone!