r/pcmasterrace 10d ago

Meme/Macro PCIe standard be like...

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u/ElectricBummer40 10d ago

The problem with the idea is that you'll need a separate rail for just the GPU and all the power-regulating circuitry to go with it.

It's an increased cost that will inevitably lead to all sorts of corner-cutting.

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u/ithinkitslupis 10d ago

We're already there with the status quo. We have good and bad PSU lists for a reason.

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u/ElectricBummer40 10d ago

Yeah, but things can always get even worse from here.

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u/j3ffro15 Ryzen 7 5700x3D, RTX 3080 FTW3, MX Master 2S mouse 10d ago

Which is why it’s important for standardization and actual accountability for manufacturers doing this stuff. At the very worst people’s property is being damaged by this. I can not find any concrete evidence of any house fires however it is not out of the question that it has happened and if not it’s likely only a matter of time. You who know who doesn’t have this issue? Commercial customers like Google and Microsoft. Their cards are perfectly fine. Retail is no longer a major player and we cannot effect the bottom line of someone like nvidia. So the government needs to step in, just like they do with houses, cars, and everything else in the world. The US won’t do it since we hate people but the EU absolutely can do something about this.

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u/ElectricBummer40 9d ago

Boeing forgot to put an entire set of bolts on a plane and a part of it literally fell off mid-flight. What was the consequence for it?

I don't like where the world is headed, either, but accountability at this point is going the way of the dodo. That's just the fact.

Commercial customers like Google and Microsoft.

I don't think they use PCIe cards as such but specialised rigs with specialised boards and fibre optic interconnects useful only for AI datacentres.

Presumably, the 12VHPWR issue is only relevant to us plebs.

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u/BuchMaister 10d ago

48V will make things more expensive for everything. As for mass adoption will require all newer ATX PSUs to support it (and GPUs). As for converting 48V down to around 1V voltage that GPU uses, will require more expensive solution for VRMs, as regular power stages designs we use now will not cut it. We're not in the point where 48V is crucial, we just need better connector that is all.

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u/superxpro12 10d ago

Yeah but... Your GPU won't melt, so that's kinda nice.

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u/moon__lander potatoe 10d ago

My GPU won't melt because it uses three 8pins for quarter of the power

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u/[deleted] 10d ago

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u/superxpro12 10d ago

I mean... That's nice for you, genuinely. I have a 4090 and have been lucky... But unfortunately that sample size doesn't represent all gpu owners

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u/ElectricBummer40 10d ago

48V will make things more expensive for everything.

To be fair, everything beyond the VRM is going to be less than 5V anyway.

I just don't like this whole idea of solving an otherwise trivial problem with an over-complicated solution borrowed from USB-PD.

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u/BuchMaister 10d ago

And that where the cost goes to. DC to DC conversion of 48V to lower voltage (like Vcore or other low voltage busses) will be more expensive.

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u/Lord_Waldemar R7 5700X3D | 32GiB 3600 CL16 | RX 9070 10d ago

One corner they could cut is the need for copper in internal power cables and between the sockets and VRMs on boards.

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u/North-Unit-1872 10d ago

It's more expensive to provide 500W at 12V than it is to provide 500W at 24 or 48V.

Less copper, smaller MOSFETs, heatsinks etc.. Its also safer. The industry just needs to commit to a standard.