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8+4 pin motherboard but PSU has only 8 pin.

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Posted · Original PosterOP


I have a problem. I recently bought a PC with RTX 2060 super Aorus and intel core i7-9700k my PSU is cougar and is 650watts and Aorus z390 pro. The PCU has only 8 pin CPU connector, but the board has 8+4 is it possible to reach 5GHz on all cores with only 8 pins and if not, could I use one PCI Express cable?

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8 pins for 5ghz is fine. The extra 4 would be for extreme cooling and overclocking for extra current. You dont need it.

The PCIE power will not fit the 4 pin cpu orientation so best not to try it. You chance frying the board.


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You will be fine without the extra 4 pin. You can't use a PCIe connector

I WILL find your ITX build thread, and I WILL recommend the SIlverstone Sugo SG13B


Primary PC:

i7 8086k (won) - EVGA Z370 Classified K - G.Kill Trident Z RGB - Force MP500 - Jedi Order Titan Xp - The venerated Hyper 212 Evo (with RGB Riing flair) - EVGA G2 650W - Black and green theme, Razer branwashed me.

Draws 400 watts under max load, for reference.


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Dual Xeon X5560 - 24GB ECC DDR3 - GTX 750 TI - old Seagate 1.5TB HDD - Dark moded Ubuntu (and Win7, cuz why not)


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49 minutes ago, i_panayotov said:

Thanks a lot! And also is the PSU too leak in wattage?

Nope. Just fine.

Gaming/Editing PC

Motherboard: Asus ROG Strix Z370-E CPU: Intel Core i7-8700K @ 4.8GHz Cooler: Noctua NH-D15 LTT Edition GPU: Asus Dual Edition RTX 2070 Super OC RAM: Corsair Vengeance 16GB @ 3000 MHz PSU: Corsair HX650 Case: Cooler Master HAF 912

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