[HELP!] 4090 & a Corsair AX860

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restecp

238 posts

Master Geek

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#305749 1-Jun-2023 16:40

Hi hivemind,

I have a query I have been unable to answer.

Let me preface this by saying I am not trying to be a cheapskate, I just think re-using hardware is a positive thing to do.

My current PC Specs are below:

CPU: 13900K
Cooler: H170I LCD
MOBO: Asus ROG Strix Z690 Gaming-E
RAM: 32GB Corsair Dominator Platinum
PSU: Corsair AX860
SSD: 1TB 980 Pro
SSD: 2x 500GB SSD's
HDD: 1x 2TB WD Green Drive
Case: Lian Li Lancool iii

I have been offered one of those too good to be true situations (it's legit) to purchase a 4090.

Question:

My query is, all I've read online tells me that this AX860 should work with the 4090, I am OPEN to purchasing a new one but when I had a quick look i found the below link:
Link: https://www.computerlounge.co.nz/shop/components/power-supplies/accessories/corsair-600w-pcie-50-12vhpwr-type-4-psu-power-cable

Would this work? Should I just purchase a new PSU and call it a day?

Appreciate the guidance :)

Jase2985

13459 posts

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#3083382 1-Jun-2023 17:07

your asking about using an adapter to connect the graphic card?

does the card not come with it?

Qazzy03

478 posts

Ultimate Geek

#3083386 1-Jun-2023 17:36

Found this

https://forums.overclockers.com.au/threads/nvidia-geforce-rtx-40-series-rtx-4090-4080-4070ti-4070-discussion.1304714/page-224#post-19285352

specifically users rg144 comment on 9/01/2023.

Looks like you should be all good.... at least on paper.

If it is an OC 4090 you might want a new PSU.

If the 4090 comes with the adapter you could just use that instead.

my 2 cents, make sure you plug it in all the way AND when you think you have done that.

Plug the cable in some more, warning for partial plug in.

https://www.youtube.com/watch?v=ig2px7ofKhQ

restecp

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#3084255 3-Jun-2023 02:02

Thanks for the help team. Turns out that I would have been limited to around 250-300W with my planned approach.

Decided to just buy a new PSU that supported 12VHPWR from the get go.

Meant to say that I was upgrading from a 3070 to this 4090 and maaaaaaaaan what a difference.

SpartanVXL

1306 posts

Uber Geek

#3086895 9-Jun-2023 11:59

Late to the party but I have setup a corsair rm850i with the corsair 12vhpwr cable addon to a 4090 for someone and was able to draw 600W plus rest of system absolutely fine.

The nvidia adapter that came with the card also worked fine, corsair 6+2pin pcie are rated 300W per cable with two plugs per cable daisy chained.