Bassman999

Upstanding
Feb 27, 2021
472
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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
 
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

Honorable
May 28, 2015
120
2
10,585
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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?
 

richard203

Honorable
May 28, 2015
120
2
10,585
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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
 
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

Honorable
May 28, 2015
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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
 
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

Honorable
May 28, 2015
120
2
10,585
0
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?
 

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