Seasonic shows 12-pin power cable for Nvidia graphics cards

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#5821252
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barbacot:

After reading the post and comments I still don't understand: why the need for this connector???
Smaller. Within spec. That's about it. Otherwise nvidia would be required to use at bare minimu 3, 8 pin connectors, or 4 8 pin connectors, for the similar wattage allowance. Again, this is only based off of in spec. If nvidia were to make a GPU that uses 8 pin connectors out of spec, my assumption is they could be at fault if an issue were to arise.
#5821255
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All this is just dumb and stupid.
haste:

I don't understand all the negativity. It's smaller, 1x12pin is the same size as 1x8PIN. You don't need to plug in two 8PIN connectors for high end cards (saves time) and I'm certain it will be bundled with new cards. So, what is the issue here? Some theoretical and pretty much unmeasurable instability in power delivery due to having 1 more cable between PSU and card? 🙂
1 word: compatibility.
barbacot:

After reading the post and comments I still don't understand: why the need for this connector???
To let you spend more money.
#5821258
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At this rate the 40XX series card will come with their own external PSU, and the 50xx cards will allow you to plug a new mobo, cpu and memory sticks into them lol
#5821261
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Alessio1989:

All this is just dumb and stupid. 1 word: compatibility. To let you spend more money.
There's always transition periods for new situations. Doesn't mean it shouldn't happen. Not going to say this will happen, cause, well, it seems this may be a proprietary design from nvidia, not even sure AIB partners can use it, let alone AMD. But for the purposes of simplicity lets say it's possible: If this new 12 pin power connector became standard, you'd literally need one connector, pretty much no matter what situation you are in, if it can provide up to 650 watts to the card. Low end that requires more then 75 watts? 12 pin. High end that requires above 575 watts? 12 pin. This would only not be the case if some GPU was made with such high power requirements it'd require two, and even in this case, that's 2 vs the, what, 6+ 8 pins that are currently there, under spec anyways? It'd be mostly the end all GPU power connector. (Again: Not saying this will happen, dunno if it's even possible, but it would be nice to have literally one power cable and not have to worry if it's 6 pin, 8 pin, two 6 pins or two 8 pins, does my power supply have it, did i lose one of the modular cables, etc. etc. etc.)
#5821273
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It should happen universally, and have a period of maybe both options.
#5821282
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Maddness:

I really can't wrap my head around this one. Why not just have 2×8pin plugs on the card instead.
because you can't send 300w through the pcie 8pin as it violates spec.
Kaarme:

But if they do, then the cards will be shipped with an adapter.
PrMinisterGR:

As long as the cards include the dual 8-pin to 12-pin adapter, this is a non issue. The first cards with 6-pin PCIe connectors also included molex to 6-pin adapters, there was no problem.
This will not be happening. its only 2 8 pins because it plugs directly into a PSU that has modular headers capable of 300w each.
alanm:

I think the 8-pin PSU side of some Seasonics can provide more than 150w, its the layout of the 8-pin GPU side thats limited to 150w. This cable is likely only for Seasonic PSUs, not universal, as the modular pin-outs of other PSUs will differ. Also hear that its only for FE 3090, AIBs may use 3 8-pin connectors. So FE 3090 buyers may need to buy a new Seasonic PSU to use their cards with the new connector.
The seasonic modular header can send 300w per cable (assuming 16AWG) so the 8+8 can push that much, this new cable takes 2 headers and can provide up to 600w total. I expect Transients on these cards are going to be absolutely massive like was the case with the Vega 56 and 64 having spikes of up to 600w.
SpajdrEX:

Since this is specific only to reference cards I don't care really 🙂 other manufacturers will stay with 2x8 PCIE or 3x8 PCIE.
My gut says there won't be a 3090 from AIB's.
#5821284
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Astyanax:

This will not be happening. its only 2 8 pins because it plugs directly into a PSU that has modular headers capable of 300w each.
So an adapter would be a 4x8-pin?
#5821287
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PrMinisterGR:

So an adapter would be a 4x8-pin?
If anyone was crazy enough to bundle one, theres too much risk of users screwing their psu's up by bridging rails together.
#5821294
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Alessio1989:

All this is just dumb and stupid. 1 word: compatibility.
Considering the upcoming standard for PSUs, this is the least of your worries in terms of compatibility. Worst-case scenario, you use an adapter like what we had to do back in the days when the 6-pin PCIe connector was first used. If you can eliminate 2x chonky 6-pin connectors into a small 12-pin, I imagine this would actually be appealing to many. Meanwhile, consider the fact that the 3090 is a triple-slot GPU. That alone will cause compatibility issues if you either have an ITX case or more expansion cards than just a GPU.
Embra:

It should happen universally, and have a period of maybe both options.
Good point - I wouldn't at all be surprised if some AIB partners offer models using "traditional" connectors.
Astyanax:

If anyone was crazy enough to bundle one, theres too much risk of users screwing their psu's up by bridging rails together.
How often has that ever been an issue? You do realize that you're mixing up rails whether it's intentional or not, right? For example, let's say the 12v wires on the 24-pin ATX connector is on a separate rail from the PCIe connectors. Well, per-spec, your motherboard is supposed to supply up to 75W to the PCIe slots. Even GPUs with external power are in fact fed some power through the PCIe slots. You are bound to bridge rails eventually. I'm pretty sure there aren't any diodes that prevent power from backflowing from PCIe devices back into the motherboard either.
#5821300
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so just removed the extra earth
#5821310
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I am so glad that people will be throwing money at this also. You have too much of it anyway buying 1000+ dollar cards and shhht.
#5821316
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schmidtbag:

How often has that ever been an issue? You do realize that you're mixing up rails whether it's intentional or not, right? For example, let's say the 12v wires on the 24-pin ATX connector is on a separate rail from the PCIe connectors. Well, per-spec, your motherboard is supposed to supply up to 75W to the PCIe slots. Even GPUs with external power are in fact fed some power through the PCIe slots. You are bound to bridge rails eventually. I'm pretty sure there aren't any diodes that prevent power from backflowing from PCIe devices back into the motherboard either.
And all of these have implemented regulation that avoids crossloading rails.
#5821325
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Astyanax:

And all of these have implemented regulation that avoids crossloading rails.
How exactly is crossloading related here? First of all, if all rails are being in-use, you're not really crossloading. Second, if implemented regulation avoids it, then what's the problem with using an adapter? In the case of many PSU designs, they only have a single 12v source but each rail is designated by the level of circuit protection they offer. So in the context of using an adapter, you're not really hurting anything, so long as you don't overload the circuit protection. There is some risk in combining 2 rails from separate sources, since the voltage regulator from one might try to compensate for the other, but if this were enough of a problem then again, the ATX connector would be a major issue a long while ago because of the way it feeds power into the GPU. Seems to me, modern hardware is built with the idea of combining discrete rails in mind.
#5821329
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Maddness:

I really can't wrap my head around this one. Why not just have 2×8pin plugs on the card instead.
barbacot:

After reading the post and comments I still don't understand: why the need for this connector???
Because the wiring on this connector is the equivelent of 4x8pin to push 600W-650W. Ofc NV would have down down the route for 4-5 8pin connectors however I see issue with people using daisy chain connections as their PSU won't have enough. Now it leaves to the PSU manufacturer to make sure how to instruct it's customers to wire those things and not burn their computers. Again is a dumb idea like the Apple connector. I do not condone Nvidia idiocy here.
#5821370
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Appears single 12V rails designs have a leg up compared to multi rail designs in this situation.
#5821375
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I thought 30XX would be very energy efficient and was hoping for a RTX 3080 Ampere with less than my current GTX 980 G1 which only uses like 180w. Looks like i might have to go for a lower model like the 3070 to keep the electric bill down and i was gonna go for a res upgrade from 1080p to 1440p at least but now it's lookin like that plan is out the window. Instead of a res upgrade i'm probably just gonna go for a HZ increase. 🙁
#5821380
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Reddoguk:

I thought 30XX would be very energy efficient and was hoping for a RTX 3080 Ampere with less than my current GTX 980 G1 which only uses like 180w. Looks like i might have to go for a lower model like the 3070 to keep the electric bill down and i was gonna go for a res upgrade from 1080p to 1440p at least but now it's lookin like that plan is out the window. Instead of a res upgrade i'm probably just gonna go for a HZ increase. 🙁
You can always use AMD if electricity costs are an issue 😀
#5821382
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barbacot:

After reading the post and comments I still don't understand: why the need for this connector???
It's the same size as a single 8-Pin, so it saves space on the PCB while being able to provide more power. Otherwise the custom cards like the MSI Lightning would have 4x 8-Pin (probably), now they can use 2x 12-Pin which takes up the same space as 2x 8-Pin.

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