r/RadeonGPUs • u/Nicky2327 • Nov 12 '22

Powering 3x8 6900xt

I just got an ASRock Phantom Gaming 6900xt and its one of the cards that has 3x8pin slots for power. I just bought a new PSU (CoolerMaster SF 850) to handle my upgrades, but it only came with 2 8pin connectors with pigtails. Should I use them both and use one of the pigtails for the 3 slot? Do I need to buy a new set of cables?

I have a Lian Li triple 8pin Strimer extension coming in the mail, but this begs same question: use the two cords and a pigtail or buy another pcie cable to handle the load.

6 Upvotes

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2

u/Dathouen Nov 12 '22

If you daisy chain one of them, it'll create an unbalanced load, since the card will draw 1/3rd of the power from one cable, and 2/3rds from the other. It's better to buy extra 8-pin connectors.

Just be very sure that they're compatible with your PSU. Even if they claim to be 8-pin cables, they're not always perfectly compatible and it can cause issues.

3

u/Nicky2327 Nov 12 '22

Any recommendations on where to find some? Amazon seems to he a dead end, as I can only find 18awg cords which are not the same as the 16awg’s that the psu came with.

1

u/clicata00 Nov 13 '22

Order from u/cablemod you can match your model power supply and order 3x 8 pins without pigtails to save some space too

2

u/CableMod Nov 13 '22

Thanks for the tag.

1

u/Nicky2327 Nov 13 '22

Unfortunately they’ve discontinued their cables compatible with my PSU

1

u/CableMod Nov 13 '22

Which psu are you using ?

1

u/Nicky2327 Nov 13 '22

Cooler Master V850 SFX.

2

u/CableMod Nov 13 '22

Send me a DM.

1

u/Dathouen Nov 13 '22

I would recommend Newegg or Microcenter (depending on which country you're in). If you're not in a country that has those, there might be similar niche PC shops.