Does this GPU work with a single power connector plugged in?

[Vasllo]

I can't seem to find an answer for this online, and my GPU only has 1, so I can't test it.

 

The card in mind is an RX 590 FatBoy, I wanna know if I can plug only the 8 pin and leave it without the 6 pin connector (the power consumption will be in the ~100w range, 25w of which from an x8 PCI-E slot), or if it won't boot at all without it?

[jaslion]

Not it does not it needs all cables to work

[DildorTheDecent]

5 minutes ago, Vasllo said:

I can't seem to find an answer for this online, and my GPU only has 1, so I can't test it.

Do you not have any molex to 6 pin adapters handy? No second PSU on hand to use connectors from it?

5 minutes ago, Vasllo said:

or if it won't boot at all without it?

It'll boot, just not to your OS. You'll get a message during POST which will say "you must connect supplementary power" or something like that. No way around it that doesn't involve you plugging in the additional connector.

[Jurrunio]

24 minutes ago, Vasllo said:

the power consumption will be in the ~100w range, 25w of which from an x8 PCI-E slot

how would you guarantee that from a card rated for 225w anyway?

[Vasllo]

33 minutes ago, Jurrunio said:

how would you guarantee that from a card rated for 225w anyway?

Underclocking and undervolting. It would be in the 80~120w range. The objetive is to mine ETH on it, my 1070 Ti is drawing 100w at it, and could be more refined.

46 minutes ago, DildorTheDecent said:

Do you not have any molex to 6 pin adapters handy? No second PSU on hand to use connectors from it?

It'll boot, just not to your OS. You'll get a message during POST which will say "you must connect supplementary power" or something like that. No way around it that doesn't involve you plugging in the additional connector.

So, the thing is, my plan is to jam 3 GPUs in my PC, and sadly my PSU only has 1 split 2x8 pin cable, so my idea was to use 1x 8 pin for 2 cards and 2 molex into another 8 pin for the third. And it's hard to find a GPU for a half decent price rn, but I found this 590 for a "good" price and was trying to think of a plan for it, but buying another PSU because of it makes it not worth the total cost.

 

I've been looking and I might get a couple 1070s instead of RX 480/580s, because the 1070s can mine others coins like RVN and FIRO pretty well, while the RX cards are only really good for ETH, and if it crashes, there goes everything. 1070s seem to be around R$1600~2000, while RX 480/580s are around R$1200~1600, so I'll have to look further into that. But the 590 will be out of question.

 

Thanks for the insights guys, just needed confirmation it wouldn't work at all.