MODDIY Recommends Latest 12V-2X6 Cables for GeForce RTX 50-series Cards

[T0@st]

MODDIY has swiftly updated its Help Center site with new guidelines, following recent reports of one of its older 12VHPWR cable designs having a high temperature disagreement with an NVIDIA GeForce RTX 5090 Founders Edition card and ASUS ROG Loki SFX-L power supply unit. The company's newest batch of (2025) 12V-2X6 and 12VHPWR are manufactured with the latest specifications and standards in mind, thus given the all-clear for utilization with NVIDIA's recently introduced GeForce RTX 5090 and RTX 5080 graphics cards. Any products from the 2024 production cycle (and before) are deemed safe to use with the GeForce RTX 40-series, but not "officially" valid for anything newer.

The company's renewed guidelines state: "as of 2025, the industry standard has transitioned to 12V-2X6, replacing the previous 12VHPWR standard. Our new cables incorporate significant advancements, including enhanced terminal and connector housing materials, along with thicker wires, to provide an additional safety buffer for the latest GPUs. At MODDIY, all 12VHPWR / 12V-2X6 cables purchased from 2025 onward are manufactured in accordance with the new 12V-2X6 specifications and standards, ensuring compatibility and optimal performance with the RTX50 series GPUs. Prior to 2024, the RTX50 series GPUs had not yet been introduced, and the prevailing standard was 12VHPWR. All cables produced before this period were designed and tested for use with the RTX40 series GPUs. We recommend that all users upgrade to the new 12V-2X6 cables to take full advantage of the enhanced safety and performance features offered by this new standard." They believe that their messily-named "ATX 3.1 PCIe 5.1 H++ 12V-2X6 675 W 12VHPWR 16 Pin Power Cable" premium custom tailor-made model is the best candidate for Team Green's modern generation of gaming cards.




The Verge's Tom Warren weighed in on the matter; highlighting the need for greater transparency from key industry players: "MODDIY is now recommending that RTX 50 series owners upgrade to 12V-2X6 cables instead of using existing 12VHPWR cables. NVIDIA and PSU manufacturers need to urgently clarify the situation here, as Corsair and others have said existing 12VHPWR cables should work."

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[Daven]

The melts keep a coming.

RTX Cablegate update: First RTX 5080 cable melts, more 5090 cases, MODDIY changes its upgrade recommendation page - VideoCardz.com

 

[HisDivineOrder]

Looks like they figure it's a great time to cash in.

 

[N/A]

This won't cut it. The state of the art PCB needs a state of the art cable with integrated fuses and temperature sensors cutting the power to prevent melting.

 

[TheDeeGee]

I see a lot of marketing bullshit.

We know the 5090 FE and possibly a bunch of AIB's have design flaws.

No amount of cable quality can solve this.

 

[Toss]

will not help. Unless users will willingly power limit their cards to 400W.
It's 400W connector by design by factoring safe power factor of 1.5x
Either 2x of those or nothing. 1 will not and never cut it.
With 2x you will have 800w safe headroom of power to overclock and do whatever you want

 

[AusWolf]

There was supposed to be one standard that unifies how we power our GPUs with a single cable. Now there's two with their sub-standards and certifications and whatnot. Can anyone follow this and make and sense of it?

 

[wNotyarD]

There was supposed to be one standard that unifies how we power our GPUs with a single cable. Now there's two with their sub-standards and certifications and whatnot. Can anyone follow this and make and sense of it?

Mandatory XKCD:

 

[Daven]

There was supposed to be one standard that unifies how we power our GPUs with a single cable. Now there's two with their sub-standards and certifications and whatnot. Can anyone follow this and make and sense of it?

Going back I only see four client based GPUs that have ever gone into the danger zone:

Radeon R9 295X2 - 500 W
Geforce RTX 390Ti - 450 W
Geforce RTX 4090 - 450 W - new standard
Geforce RTX 5090 - 575 W - new standard

I don't remember any reports about the 295X2 or 390Ti causing problems. So it looks like the new standard isn't as good as the old one. I think 12V-2X6 and derivatives should be abandoned.

 

[wNotyarD]

Going back I only see four client based GPUs that have ever gone into the danger zone:

Radeon R9 295X2 - 500 W
Geforce RTX 390Ti - 450 W
Geforce RTX 4090 - 450 W - new standard
Geforce RTX 5090 - 575 W - new standard

I don't remember any reports about the 295X2 or 390Ti causing problems. So it looks like the new standard isn't as good as the old one. I think 12V-2X6 and derivatives should be abandoned.

And yet the 295X2 somehow used only two 8-pin PEG connectors. I could've sworn it used three.

EDIT: Looking at the TPU's GPU Database, the two released 290X2 cards were rated for 580W TDP. ASUS' ARES used three PEG connectors, PowerColor's Devil 13 used FOUR.

 

[narutoramox]

based on Paulo Gomes Team Brazil, the problem is not the cable, it is the PCB architecture, which unifies the entire power line at one point, when we use the adapter this GPU does not turn off when the cables are not connected. only when all the cables are not plugged in.





Desktop: R7-5600X / Gigabyte B450 Aorus TUF/ 2x16GB Asgard Bragi DDR4-3600CL14 / RTX 3070 Asus KO / 1TB SSD / Core Reactor 850W / G420 Deepcool /Pichau apus
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[Vayra86]

will not help. Unless users will willingly power limit their cards to 400W.
It's 400W connector by design by factoring safe power factor of 1.5x
Either 2x of those or nothing. 1 will not and never cut it.
With 2x you will have 800w safe headroom of power to overclock and do whatever you want

hehe.... IF the cable isn't worn enough to create sufficient resistance on one of them to make the other go poof.

Also let's consider 900W transient peaks. Are we absolutely certain this is going to cut it?

 

[user556]

That's a myth. 12V-2x6 is using different plugs on the cable. 12VHPWR cables should be recalled.

 

[Crackong]

Jay also come out with his own observation.
Some first-party cables have losen pins inside the connector after a few times of plug in pull out.
He also confirms that some of the wires shows >10A under loading, while the others are 6.2 - 8A
No burn, but 10A per pin definitely violates the 9A spec

 

[Dragonsmonk]

Jay also come out with his own observation.
Some first-party cables have losen pins inside the connector after a few times of plug in pull out.
He also confirms that some of the wires shows >10A under loading, while the others are 6.2 - 8A
No burn, but 10A per pin definitely violates the 9A spec

Also looking at the Vid made by Der8auer in this regards, he has seen up to 21A on a single wire, 152C+ on PSU side and still 90C+ on GPU side... absolutely insane.

will not help. Unless users will willingly power limit their cards to 400W.
It's 400W connector by design by factoring safe power factor of 1.5x
Either 2x of those or nothing. 1 will not and never cut it.
With 2x you will have 800w safe headroom of power to overclock and do whatever you want

If I am not mistaken though the spec is 600W though?

 

[R-T-B]

If I am not mistaken though the spec is 600W though?

It is. His point is if you factor in standard safety margins, it shouldn't be.

 

[Crackong]

Also looking at the Vid made by Der8auer in this regards, he has seen up to 21A on a single wire, 152C+ on PSU side and still 90C+ on GPU side... absolutely insane.

Yes....from other posts we looked at der8auer's video and the conclusion is quite similar... there are problems in the power delivery design of the FE cards...

 

[user556]

Fundamentally, the problem is only with the cable plug though.

 

[wNotyarD]

Fundamentally, the problem is only with the cable plug though.

Of course it is, it's the only one with flexibility. Both the GPU and PSU connectors are solid pins soldered to a board.
However, both sides are designed to a same spec. So if one side is fragile, the whole spec is flawed.

 

[user556]

Oh, right. I have to keep saying the whole statement don't I.

The flawed plugs are only on the older 12VHPWR cables. The newer 12V-2x6 cables have different plugs, so are fixed.

And the other part of the statement is all the flawed cables should be recalled and replaced free of charge.

 

[wNotyarD]

Oh, right. I have to keep saying the whole statement don't I.

The flawed plugs are only on the older 12VHPWR cables. The newer 12V-2x6 cables have different plugs, so are fixed.

And the other part of the statement is all the flawed cables should be recalled and replaced free of charge.

And you can go repeating on an on to believe it yourself. Doesn't make you any more correct.

The specs change from 12VHPWR to 12V-2x6 are ONLY on the male connectors, GPU and PSU side.
Here's from Corsair:

Are 12VHPWR cables any different from 12V-2x6 cables?​

Let's cut to the chase. There is no difference between a 12VHPWR and a 12V-2x6 cable. The changes in revising the 12VHPWR connector and renaming it to 12V-2x6 were only made to the connectors on the graphics card side. Power supplies should also use the 12V-2x6 connector if available directly on a modular power supply. This is the case with the CORSAIR RMx series, for example.

 

[user556]

But the Corsair cable Jay used was H++ which is 12v-2x6

Jay states (at 8:20) that all his Corsair cables and power supplies are 12VHPWR (H+).

The specs change from 12VHPWR to 12V-2x6 are ONLY on the male connectors, GPU and PSU side.

This MODDIY press release even states the pins in the cable plugs are upgraded - "Our new cables incorporate significant advancements, including enhanced terminal and connector housing materials ..."

It's common business practice to not admit there is a problem until after there is a solution. Err: That's too generous. It's common business practise to never admit a problem ... even after plainly offering a fix.

 

[wNotyarD]

This MODDIY press release even states the pins in the cable plugs are upgraded - "Our new cables incorporate significant advancements, including enhanced terminal and connector housing materials ..."

It's common business practice to not admit there is a problem until after there is a solution. Err: That's too generous. It's common business practise to never admit a problem ... even after plainly offering a fix.

They can (and need to) market all they want after a product of theirs get caught in the middle of a mess. But from a production standpoint, without any changes to the specs (which there ain't any, from 12VHPWR to 12V-2x6) what they can improve is the materials and/or the tools used to make their cables.

 

[user556]

The spec doesn't appear to cover construction of the spring contacts inside the cable plugs. So they can be changed/upgraded/anything-at-all without any change to the spec.

Which I guess means that 12V-2x6 (H++) is not an actual guarantee of a fix. It just happens that the plug manufacturers are now getting their act together.

Or the spec has changed for the spring contacts but we're not privy to that section.

 

[lexluthermiester]

Jay also come out with his own observation.
Some first-party cables have losen pins inside the connector after a few times of plug in pull out.
He also confirms that some of the wires shows >10A under loading, while the others are 6.2 - 8A
No burn, but 10A per pin definitely violates the 9A spec

I think Jay is on to something. Clumsy and loose jack fittings are likely contributing to a degree in this round of cards and perhaps even in the previous gen cards.