4 pin power headers and 3 pin power connectors

UberDude

Honorable
Jun 14, 2013
3
0
10,510
Hi, i am new to these forums and i may not ask this question right, i am also not good with computers.So, i got a graphics card and it came with a 6 pin power connector with 2 4 pin power connectors on the other side.In my computer there are about 5 power headers all labeled P3, P4,etc. and i want to know, does it matter which two i plug my power connectors into, or do i just plug them into any of them, thank you for your reply
 

UberDude

Honorable
Jun 14, 2013
3
0
10,510
the card is a zotac geforce gx660 and needs at least 450W in order to power. I have a Bestec model ATX0300D5WC i dont think it can handle that and i am looking at a psu to buy that stores 450W