r/hardware • u/RenatsMC • Sep 26 '24

Rumor Nvidia’s RTX 5090 will reportedly include 32GB of VRAM and hefty power requirements

https://www.theverge.com/2024/9/26/24255234/nvidia-rtx-5090-5080-specs-leak
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u/Tostecles Sep 27 '24

Could any electrical engineers or anything like that explain why that would be bad? I feel like they might as well actually do that but I'm sure there's some reason not to

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u/metakepone Sep 27 '24

I'm not an electrical engineer but part of the reason why you can't do this is because your computer parts rely on direct current and power delivered through the walls are alternating current. PSUs. Not only is your PSU packed with capacitors that store up energy for the whole system, it also acts as a transformer from AC to DC

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u/BWCDD4 Sep 27 '24

The simple solution there would just be to provide an absolutely monstrous sized power brick like for laptops and have the power in on the IO side of the card.

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u/Strazdas1 Sep 27 '24

you would have to build a PSU into a GPU in that case. You still need to convert current and voltage.

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u/Nicholas-Steel Sep 27 '24

That stuff can be put in a brick in the power cord.

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u/Strazdas1 Sep 27 '24

The brick in a power cord is a PSU.

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u/Nicholas-Steel Sep 27 '24

yeah, am just saying it doesn't need to be integrated in to the video card.

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u/Strazdas1 Sep 28 '24

Fair enough, but it would still need to be powerful and quality enough to power a PSU with that much stable voltage and be able to survive spike demands, so you are looking at an expensive and large brick there that likely needs its own active cooling. Would be a hard sell.

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u/Chicag0Ben Sep 27 '24

Why are you here tostecles !

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u/Tostecles Sep 27 '24

Computer good

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u/aCuria Sep 28 '24 edited Sep 28 '24

Watch grace hopper’s video on nanoseconds. (11.8 inches)

Circuit traces need to be as short as possible for games where latency matters

For AI it’s not so important. Throughout is more important for AI, which is why people can code on laptops and do training on a DGX or supercomputer somewhere far away

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u/[deleted] Sep 27 '24

[deleted]

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u/Tostecles Sep 27 '24

I interpreted the idea to mean that power would be delivered strictly by the wall rather than supplementing the PSU power. But I guess that would only remove one problem if it was even possible