Help with Cobs Citizen

[AzorTX]

Hello sorry for my english only 1 year in USA


I am building mi panel leds , at this moment i have the following components

4 Cobs Citizen CLU48 1212 C4 2700K CRI 97
2 Cobs Citizen CLU48 1212 C4 3000K CRI 90
2 Driver Mean Well 150w ELG-150-36-A
6 Holders, termal pads, cable etc...


I only need the heatsink ,could you tell me what is better ,

Heatsink single for example

Or this Heatsink

 

[Sinfor]

Much better the first one, Wich one you need depends on ambient temperature and the temperature on COB's junction.