[SOLVED] Question about RTX 4000 series PCIE power pin and PSU

Webexplr

Distinguished
Mar 15, 2013
5
0
18,510
0
I am looking forward to buy a RTX 4070 Ti when it's released, but I found out that the graphics card will be using a 12 pin PCIE power connector. My PSU is a Corsair RM 750; it has two 6+2 pin PCIE power connectors.

So, how can I connect the card to my PSU? Or does the card like this usually comes with adapter in the box? Maybe two 8 (6+2) pins to 12 pin adapter?
 

mjbn1977

Distinguished
Yes, you can. It will work perfectly with your PSU. I just installed my RTX 4080 in my system with an Corsair RM850X. You have two ways. You either connect to of the PCI-E power cables with to the 12 pin power connector adaptor (only use one 6+2 on each cable) or you use one of the PCI-E power cables and use both 6+2 daisy chained connectors. But in the latter case only use the PCI-E power cables that came with your PSU. The cables in RM750X are good quality and can deliver the required 150Watt per 6+2 connector (other daisy chained cables from 3rd party might not be able to do that, but the ones from Corsair that come with the RM PSUs are pretty good quality).

By the way....my RTX 4080 in Cyberpunk 2077 in 1440p with all settings max, RTX Psycho and DLSS Quality never draws more than 320 Watts (more like 310 most of the time).
 

Math Geek

Titan
Ambassador
right, the adapter combines multiple 8 pin connections into the single 12 pin.



this is the one for the 4090. 4 x 8-pins combines to power the 12 pin giving it 600w of potential power. 150w per 8 pin.

most likely the 4070ti will use 3 x 8-pins but that's just a guess based on the 4080.
 

mjbn1977

Distinguished
Yes, you can. It will work perfectly with your PSU. I just installed my RTX 4080 in my system with an Corsair RM850X. You have two ways. You either connect to of the PCI-E power cables with to the 12 pin power connector adaptor (only use one 6+2 on each cable) or you use one of the PCI-E power cables and use both 6+2 daisy chained connectors. But in the latter case only use the PCI-E power cables that came with your PSU. The cables in RM750X are good quality and can deliver the required 150Watt per 6+2 connector (other daisy chained cables from 3rd party might not be able to do that, but the ones from Corsair that come with the RM PSUs are pretty good quality).

By the way....my RTX 4080 in Cyberpunk 2077 in 1440p with all settings max, RTX Psycho and DLSS Quality never draws more than 320 Watts (more like 310 most of the time).
 

mjbn1977

Distinguished
right, the adapter combines multiple 8 pin connections into the single 12 pin.



this is the one for the 4090. 4 x 8-pins combines to power the 12 pin giving it 600w of potential power. 150w per 8 pin.

most likely the 4070ti will use 3 x 8-pins but that's just a guess based on the 4080.
In my 4080 I had this with 3 connectors. The 4070Ti is most likely coming with one that has 2 or 3 connectors. The 4070 TI will use less than 285 Watt, so you will have two. But this is also depending on the model. Some board partner might give it higher power limits....
 

Math Geek

Titan
Ambassador
sounds about right. but i don't like to say it's 100% until we know for sure :)

but 2-3 sounds right obviously, though with only 2 the 16 pin makes little sense overall..... but 3 of them for 3rd party cards is def not out of the question. we'll see whenever it actually comes out.

most reports said it would have the same tdp as the 4080, 285w, so that would suggest 3 x 8-pins.
 
Last edited:

Why_Me

Champion
I am looking forward to buy a RTX 4070 Ti when it's released, but I found out that the graphics card will be using a 12 pin PCIE power connector. My PSU is a Corsair RM 750; it has two 6+2 pin PCIE power connectors.

So, how can I connect the card to my PSU? Or does the card like this usually comes with adapter in the box? Maybe two 8 (6+2) pins to 12 pin adapter?
https://www.corsair.com/us/en/Categ...0-12VHPWR-Type-4-PSU-Power-Cable/p/CP-8920284
Corsair 600W PCIe 5.0 12VHPWR Type-4 PSU Power Cable $19.99
 

ASK THE COMMUNITY