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Nvidia announces next-gen RTX 5090 and RTX 5080 GPUs

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Re: Nvidia announces next-gen RTX 5090 and RTX 5080 GPUs

#312
post #156

Pretty interesting watching their tech explainers on YouTube about the changes in their AI solutions. Apparently they switched from CNNs to transformers for upscaling (with ray tracing support) if I understood correctly though for frame generation makes even more sense to me. 32 GB VRAM on the highest end GPU seems almost small after running LLMs with 128 GB RAM on the M3 Max, but the speed will most likely more than…

They are intentionally keeping the VRAM small on these cards to force people to buy their larger, more expensive offerings.

Is there actually less VRAM on the cards or is it just disabled?

Re: Nvidia announces next-gen RTX 5090 and RTX 5080 GPUs

#313
post #124
post #59

Earlier quoted context omitted.

The new DLSS 4 framegen really needs to be much better than what's there in DLSS 3. Otherwise the 5070 = 4090 comparison won't just be very misleading but flatly a lie.

Seems like pretty heavily stretched truth. Looks like the actual performance uplift is more like 30%. The 5070=4090 comes from generating multiple fake frames per actual frame and using different versions of DLSS on the cards. Multiple frame generation (required for 5070=4090) increases latency between user input and updated pixels and can also cause artifacts when predictions don't match what the game engine would d…

> Multiple frame generation (required for 5070=4090) increases latency between user input and updated pixels

Not necessarily. Look at the reprojection trick that lots of VR uses to double framerates with the express purpose of decreasing latency between user movements and updated perspective. Caveat: this only works for movements and wouldn't work for actions.

Re: Nvidia announces next-gen RTX 5090 and RTX 5080 GPUs

#314
post #46

The interesting part to me was that Nvidia claim the new 5070 will have 4090 level performance for a much lower price ($549). Less memory however. If that holds up in the benchmarks, this is a nice jump for a generation. I agree with others that more memory would've been nice, but it's clear Nvidia are trying to segment their SKUs into AI and non-AI models and using RAM to do it. That might not be such a bad outcome…

Was surprised to relearn the GTX 980 premiered at $549 a decade ago.

Re: Nvidia announces next-gen RTX 5090 and RTX 5080 GPUs

#315
post #48

Earlier quoted context omitted.

It’s 3 extrapolated frames not interpolated. So would be reduced lag at the expense of greater pop-in. There’s also the new reflex 2 which uses reprojection based on mouse motion to generate frames that should also help, but likely has the same drawback.

> It’s 3 extrapolated frames not interpolated. Do you have a source for this? Doesn't sound like a very good idea. Nor do I think there's additional latency mind you, but not because it's not interpolation.

https://www.nvidia.com/content/dam/en-zz/Solutions/geforce/n...

Re: Nvidia announces next-gen RTX 5090 and RTX 5080 GPUs

#316
post #49

Earlier quoted context omitted.

That claim is with a heavy asterisk of using DLSS4. Without DLSS4, it’s looking to be a 1.2-1.3x jump over the 4070.

Do games need to implement something on their side to get DLSS4?

The asterisk is DLSS4 is using AI to generate extra frames, rather than rendering extra frames, which hurts image stability and leads to annoying fuzziness/flickering. So it's not comparing like with like.

Also since they're not coming from the game engine, they don't actually react as the game would, so they don't have advantages in terms of response times that actual frame rate does.

Re: Nvidia announces next-gen RTX 5090 and RTX 5080 GPUs

#317

Earlier quoted context omitted.

The only difference is scalar. That isn't differentiating, that's segregation. It won't stop crypto and LLM peeps from buying everything (one assumes TDP is proportional too). Gamers not being able to find an affordable option is still a problem.

>Gamers not being able to find an affordable option is still a problem. Used to think about this often because I had a side hobby of building and selling computers for friends and coworkers that wanted to get into gaming, but otherwise had no use for a powerful computer. For the longest time I could still put together $800-$1000 PC's that could blow consoles away and provide great value for the money. Now days I almo…

One edge that PCs have is massive catalog.

Consoles have historically not done so well with backwards compatibility (at most one generation). I don't do much console gaming but _I think_ that is changing.

There is also something to be said about catalog portability via something like a Steam Deck.

Re: Nvidia announces next-gen RTX 5090 and RTX 5080 GPUs

#318

Earlier quoted context omitted.

They are intentionally keeping the VRAM small on these cards to force people to buy their larger, more expensive offerings.

Is there actually less VRAM on the cards or is it just disabled?

GPU manufacturers have no reason to include additional memory chips of no use on a card.

This isn't like a cutdown die, which is a single piece with disabled functionality...the memory chips are all independent (expensive) pieces soldered on board (the black squares surrounding the GPU core):

https://cdn.mos.cms.futurecdn.net/vLHed8sBw8dX2BKs5QsdJ5-120...

Re: Nvidia announces next-gen RTX 5090 and RTX 5080 GPUs

#319
post #192

This is maybe a dumb question, but why is it so hard to buy Nvidia GPUs? I can understand lack of supply, but why can't I go on nvidia.com and buy something the same way I go on apple.com and buy hardware? I'm looking for GPUs and navigating all these different resellers with wildly different prices and confusing names (on top of the already confusing set of available cards).

It is frustrating speaking as someone who grew up poor and couldn't afford anything, and now I finally can and nothing is ever in stock. Such a funny twist of events, but also makes me sad.
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