Buy Motherboard And Cpu I Just Bought A Motherboard W/ A CPU And Heatsink Preinstalled. Do I Need To Buy A CPU Fan?

I just bought a motherboard w/ a CPU and heatsink preinstalled. Do I need to buy a CPU fan? - buy motherboard and cpu

The link below shows that the motherboard just bought.

http://www.geeks.com/details.asp?invtid = ...

I thought it was strange that with a heat sink without a fan, but came. If the heat sink to replace it with one that is a fan connected to it?