my ga-f2a88x-up4 mother board has an 8 pin 12v atx connector do I need all 8 to run or csn I just use 4 pins?

trev51

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May 6, 2014
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My ga-f2a88x-up4 motherboard has an 12v atx 8 pin and my power supply (antec earthwatts 500w) has 2x 4 pins but one has a sticker in it saying "use for single cpu use" what does that mean? And csn I just use 4 pins in the atx 12v 8 pin slot or does it have to be all 8?