4 or 8pin power connector?

13westbay

Member
bought a new power supply and wiring it in, before i even started anything i noticed the mobo has an 8 pin connection for the cpu power, but the current supply only has a 4 pin option (it came w the computer and a uncle upgraded the mobo) the question is do i use the 8 pin? or stick w the 4 pin?

the mobo is an asrock extreme 3 r2.0 amd board
the cpu is amd fx4300 unlocked
plz any response is welcome as i am new to this portion of computers.
 
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