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Seasonic Outs 12-Pin Nvidia Power Connector, Lists 850W PSU Requirement (Updated)

(Image credit: @9550pro on Twitter)

Update, 8/23/2020 11:45am PT: Added more pictures posted by Seasonic to bilibili forums.  

Original Article:

The countdown to Nvidia's Ampere GeForce GPUs has started, and meanwhile, the rumor mill is working as hard as it can to get you excited. We recently caught wind of a rumor detailing Nvidia's new 12-pin power connector and verified through our sources that such a cable does exist, and now a new picture of a 12-pin cable has surfaced - and it's purportedly posted by Seasonic, a PSU manufacturer. 

The posting was spotted by twitter user HXL, who found the image on the bilibili forums. It shows a Seasonic cable next to its box, adapting dual 8-pin connectors into a single 12-pin connector. The "Nvidia 12-pin PCIe Molex Micro-Fit 3.0 Connector" is 750 mm long, and the box notes "It is recommended to use a power supply rated 850 W or higher with this cable."

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(Image credit: Seasonic via Bilibili)
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(Image credit: Seasonic via Bilibili)
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(Image credit: Seasonic via Bilibili)
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(Image credit: Seasonic via Bilibili)
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(Image credit: Seasonic via Bilibili)

As you can see above, the 12-pin micro connector is small, being not much larger than a single one of the 8-pins on the other end. This cable features two male 8-pin connectors, it's intended to plug straight into the modular ports on a Seasonic PSU -- rather than to be used as an adapter on your existing 8-pin cables. 

Normally, 8-pin power connectors are rated for 150W each, which paired with 75W through the PCIe port tallies up to 375W of total board power. This isn't completely unheard of, as even custom boards from Nvidia's AIC partners occasionally have three PCIe power connectors. However, it's noteworthy that this doesn't say much about Ampere's power consumption or efficiency.

The Nvidia GeForce RTX 3090 was also pictured again just yesterday, and it looks like it will be a behemoth of a triple-slot card, suggestive of a power-hungry design.

It's unclear whether this new 12-pin connector will make it to the entire Ampere GeForce line. According to Google Translate, Seasonic notes "Is it really unsure, dare to send because there is no NDA. If it is true, the power supply manufacturer will increase the cost of the bonus line, and Lao Huang will not give us a penny. It is currently only used for testing"

The note on the box says "It is recommended to use a power supply rated 850 W or higher with this cable," but that might only be needed for the most power-hungry cards, as we could imagine it would upset quite a large group of people if something like the RTX 3070 would also need a near-kilowatt PSU. 

That being said, it's also possible that the note is just there as a warning. After all, we can't deny that a single 12-pin connector would be a much more elegant solution than multiple connectors, especially if you decide to indulge in individually-sleeved cables. 

Either way, the only way to know for sure is by waiting for Nvidia's actual announcement, so just sit tight until September 1st. 

  • InvalidError
    Rumors so far hint at ~400W for the highest-end models, slightly beyond the nominal rating for PCIe + dual 8-pins. Guess Nvidia got fed up with needing multiple 8-pins due to the PCIe-SIG being excessively conservative with its connector rating when the max rating of MiniFitJr pins is 13A apiece. Also doesn't help that three out of eight pins on the 8-pins are technically for detection and remote sense, not power.
    Reply
  • nofanneeded
    Just make the Motherboard carry all the power and close this subject all together ...
    Reply
  • drivinfast247
    nofanneeded said:
    Just make the Motherboard carry all the power and close this subject all together ...
    So an all new PCIe slot design?
    Reply
  • spongiemaster
    drivinfast247 said:
    So an all new PCIe slot design?
    They could just make the slot longer like they did with PCI, so it is backwards compatible.


    Running all the power through the motherboard doesn't really fix anything, you'd still need to run all the cables to the motherboard. Some X299 motherboards already use a 24 pin and 3x8pin. How many more cables do you want to plug into your motherboard? It seems like the power supply needs to be updated first.
    Reply
  • jkflipflop98
    You'd need some pretty beefy traces in your mobo to handle that much juice
    Reply
  • King_V
    Ye gods... 400W?
    Reply
  • deesider
    jkflipflop98 said:
    You'd need some pretty beefy traces in your mobo to handle that much juice
    Instead of etching them, they'll need a milling machine...
    Reply
  • russell_john
    Admin said:
    A power supply manufacturer has posted pictures of a new 12-pin cable for Nvidia GPUs.

    Seasonic Outs 12-Pin Nvidia Power Connector, Lists 850W PSU Requirement : Read more

    Why is everyone freaking out about this? What the hell is the difference between using 2 6 pin connectors or 1 12 pin connector?

    I'll tell you what the ONLY difference is, the 12 pin connector is smaller and takes up less board space than 2 6 or 8 pin connectors .... Several graphics cards have 12 pins connections on them already usually an 8 and a 4 ..... ditto for motherboards .... For instance my RX 5700 (non-XT) has and 8 pin and a 6 pin for a total of 14 pins but no one freaked out about THAT!

    So why is everyone freaking out about a Common Sense change to a single smaller connector because the old one is too large and outdated?
    Reply
  • King_V
    Pretty sure the "freaking out" as you call it is about the need for that much power on a GPU.
    Reply
  • gggplaya
    spongiemaster said:
    They could just make the slot longer like they did with PCI, so it is backwards compatible.


    Running all the power through the motherboard doesn't really fix anything, you'd still need to run all the cables to the motherboard. Some X299 motherboards already use a 24 pin and 3x8pin. How many more cables do you want to plug into your motherboard? It seems like the power supply needs to be updated first.

    I disagree, it would make the install SIGNIFICANTLY CLEANER looking. I hate the look of my wires running all the way around my video card to plug in the front side of it. Looks terrible no matter how you do it.
    Reply