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Simple doubt about PSU 8 pin and 4 pin connector, need some help!!

Hi guys how are you?

I just bought a new CPU and a new Motherboard in a store and the store mounted it for me with my other pieces

But now i have a question, take a look at the picture:



The guy of course used the 24 pin connector and as you can see this MB has an 8 pin and one more 4 pin connector

Ho here is the question, he only used the 8 pin connector(red arrow), the 4 pin one is not plugged (blue arrow) with the PSU cable is it correct or should i plug both? If the answer is only the 8 pin why the MB have both?

I`m using here a 4770k @4.5 with a H110 2 GTX 780 in SLI and the PSU is a Coolermaster SilentPro Gold 1200W

Thanks
10 answers Last reply Best Answer
More about simple doubt psu pin pin connector
  1. If the PSU has the extra connector, you might as well use it.

    It's really a gimmick though; you're never going to draw enough to stress those connectors. Hell, you could use 5A per pin, get 120W from a four-pin.
  2. Both supply power to the CPU in the same way. But, the reason why this motherboard has 8+4 connectors is so that it can get MORE power without burning up your PSU wires while overclocking. So in normal usage, you can get away with a single 4 pin connector. If you are going balls out overclocking, you can connect all 8+4 and not have to worry about power issues provided your PSU can handle it. See what I mean?
  3. Check your owners manual for sure, but my mother board manual states that my warranty will be void if I don't use both of the connectors. Like others have posted, it also helps you from burning up a rail on your power supply. Not only does that connector supply power to the CPU, but also your PCI cards, so if you are planning on using a high end video card (or 2) make sure you use both connectors.
  4. Yes my PSU have 2 2x4 pin connector cables so the pin at the board had the 2x4 one and now i only need to use the one part of the other 2x4 pin of the PSU to connect the over energy slot at the board right? Can i use any part of the 2x4 to this connection?

    Thanks
  5. One half will fit easily, one will need forcing.

    Make sure that the 8-pin is a CPU connector (aka EPS), and not PCIe/GPU.
  6. Someone Somewhere said:
    One half will fit easily, one will need forcing.

    Make sure that the 8-pin is a CPU connector (aka EPS), and not PCIe/GPU.


    No i was looking here at my MB box and it says that i has one 20 pin + 4 pin and two 4+4 pin, so i just need to connect any part of this other 4+4 pin right? Any 4 part pin?
  7. Best answer
    You should be using one 4+4 pin for the 8-pin connector, and half of the other for the 4-pin.

    Sounds like Taiwanglish.
  8. Someone Somewhere said:
    You should be using one 4+4 pin for the 8-pin connector, and half of the other for the 4-pin.

    Sounds like Taiwanglish.


    Ok but can i use any half of this 4+4?

    Thanks
  9. Thanks guys just connected here

    Whre can i let the other half of the pin? Is there a problem if i let in the top of the case, i mean is there a problem if the pin touch the case? Should i use some isolated tape in the other half?

    Thanks
  10. It's fine, so long as the pins don't actually touch any metal - they're coated in plastic, so it should be fine.

    Biggest issue is running into fans.
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