[SOLVED] Rtx3090 power connector question

[richard203]

Can I use a 12 pin connector connected to the psu and the 2x 8 pin connect to the gpu and then add a mother single 8 pin to the gpu? The evga 3090 use 3x 8pin connector. This is wat I brought.

https://www.bestbuy.com/site/corsair-12-pin-gpu-power-cable-sleeved-black/6437465.p?skuId=6437465

 

[Bassman999]

Can I use a 12 pin connector connected to the psu and the 2x 8 pin connect to the gpu and then add a mother single 8 pin to the gpu? The evga 3090 use 3x 8pin connector. This is wat I brought.

https://www.bestbuy.com/site/corsair-12-pin-gpu-power-cable-sleeved-black/6437465.p?skuId=6437465

I've never seen these before, but that i what is says it does for Nvidia 3xxx series GPUs.
Threre are some cards that require 3 x8 and so this isnt going to work properly for those

 

[dotas1]

Can I use a 12 pin connector connected to the psu and the 2x 8 pin connect to the gpu and then add a mother single 8 pin to the gpu? The evga 3090 use 3x 8pin connector. This is wat I brought.

https://www.bestbuy.com/site/corsair-12-pin-gpu-power-cable-sleeved-black/6437465.p?skuId=6437465

Founders edition come with a 12pin to 2x8pin adapter in the box. Those only require that and nothing else. The rest of the 3090s DO NOT use the 12pin at all. So you will only need 2 or 3 8pins depending on the model.

What exact psu do you have? Please include make, model and wattage.

 

[richard203]

I got cosair rm750i, I used all my 8pin cable and I seems to can’t find any on Amazon that is single cable. You guys got any website that sell single cable gpu 8pin cable?

 

[dotas1]

I got cosair rm750i, I used all my 8pin cable and I seems to can’t find any on Amazon that is single cable. You guys got any website that sell single cable gpu 8pin cable?

What do you mean you used them all? It says that it has 4 PCIe connectors included.

 

[richard203]

What do you mean you used them all? It says that it has 4 PCIe connectors included.

I looked in the box, I don’t see any 8pin connector. Mybe the store that help me build my computer kept them?

 

[dotas1]

Then you should contact them. What exact 3090 are you getting?

 

[richard203]

I got evga 3090 ftw and zotac 3090 holo amp core. I opened the evga ftw 3090 and saw that it didn’t come with the cable so I didn’t open the other 3090. It’s been a few years and the current graphic card I’m using is gtx970. So I’m better off to just order 3x 8pin better

 

[dotas1]

Wait, you own 2 3090s and want to put both in?
Please explain what you want to do because I am afraid the PSU won't be enough for what you want to do. Also PSU cables are not universal, not even within the same manufacturer so I would make sure that I get the right ones.

 

[richard203]

Wait, you own 2 3090s and want to put both in?
Please explain what you want to do because I am afraid the PSU won't be enough for what you want to do. Also PSU cables are not universal, not even within the same manufacturer so I would make sure that I get the right ones.

im planning to build a amd pc so ima put two 3090 in with a 1200watt psu. i just want to try one 3090 first so im installing 1 3090 in my current comp but didnt expect to hve no cable.
i ordered this cable from newsegg. do you think this work for my rm750i?

https://www.newegg.com/p/N82E16812162033?Item=N82E16812162033

 

[dotas1]

The item you ordered seems to NOT be compatible with your PSU. You need to order from a site that specifically says that your EXACT model of PSU is supported.

On another note, if you are planning to use 2 3090s for gaming using SLI I would advise against it.
SLI is dead, not supported by the crushing majority of games and the ones that tried 2 3090s have either no gains or worse performance. You would be far better selling the second 3090 or use it in another system.
If you plan to use them for other workloads instead, it's another story and I really don't know if it does benefit you (I guess it does).

 

[richard203]

The item you ordered seems to NOT be compatible with your PSU. You need to order from a site that specifically says that your EXACT model of PSU is supported.

On another note, if you are planning to use 2 3090s for gaming using SLI I would advise against it.
SLI is dead, not supported by the crushing majority of games and the ones that tried 2 3090s have either no gains or worse performance. You would be far better selling the second 3090 or use it in another system.
If you plan to use them for other workloads instead, it's another story and I really don't know if it does benefit you (I guess it does).

i tried looking for cable that say it will work for my psu but nothing come up. you think you can help me find a cable that works for my psu?

 

[richard203]

i looked on ebay, do you think this works? it dont tell if its for gpu or for cpu. i researched that the cpu 8pin and gpu 8 pin is different.

https://www.ebay.com/itm/303996150818?hash=item46c7952422:g:iCEAAOSwDUpgnWrL

 

[dotas1]

https://www.corsair.com/eu/en/Categ.../Type-3-Sleeved-Black-PCIe-Cable/p/CP-8920111

You need to search for Corsair Type 3 PCIe PSU cable.
The GPU 8 pin as you say it, it's the PCIe cable.

 

[richard203]

So it’s this? The item number matched with the link u posted. Let me know if the link I posted is correct, if it’s correct I’ll order it.

https://www.newegg.com/p/18W-01XJ-0...VQCGtBh3ClAbFEAQYASABEgL6v_D_BwE&gclsrc=aw.ds

 

[dotas1]

Since it does say type 3 then yeah, it should be compatible.

 

[richard203]

Since it does say type 3 then yeah, it should be compatible.

thanks you