Tuesday, September 13th 2022

NVIDIA AD102 "Ada" Packs Over 75 Billion Transistors

NVIDIA's next-generation AD102 "Ada" GPU is shaping up to be a monstrosity, with a rumored transistor-count north of 75 billion. This would put over 2.6 times the 28.3 billion transistors of the current-gen GA102 silicon. NVIDIA is reportedly building the AD102 on the TSMC N5 (5 nm EUV) node, which offers a significant transistor-density uplift over the Samsung 8LPP (8 nm DUV) node on which the GA102 is built. The 8LPP offers 44.56 million transistors per mm² die-area (MTr/mm²), while the N5 offers a whopping 134 MTr/mm², which fits in with the transistor-count gain. This would put its die-area in the neighborhood of 560 mm². The AD102 is expected to power high-end RTX 40-series SKUs in the RTX 4090-series and RTX 4080-series.
Source: kopite7kimi (Twitter)
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31 Comments on NVIDIA AD102 "Ada" Packs Over 75 Billion Transistors

#26
kapone32
The Von MatricesYep. You don't just triple the number of transistors nowadays without nearly tripling the power.

People are thinking that this chip will be amazingly fast based solely upon the number of transistors. It won't come close to that because it will be severely power limited.
Agreed. the Power draw will be mitigated by the amount of heat these are going to produce. I bet you the AIB parts are still going to have 2 of those 12 pin connectors for some of them and probably have a 500W+ Power Draw.
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#27
64K
I believe this GPU will possibly be priced so high that only a very, very few will be sold.
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#28
Unregistered
wolfI suppose they are if personally you consider them to be a waste, I do not. I've used that 10% die area for the majority of my ownership of an RTX gpu.

Bear in mind too iirc of that 10% die area, roughly 2/3 of that is RT and 1/3 is Tensor, so ~3% die space for Tensor alone, easy yes for me and indeed many people like me.

Well I've used that die area for hundreds of hours of RT/DLSS enabled gaming, so I'd say they definitely are at least gaming features too.
I am glad that you found some use for them, unfortunately my games don't support DLSS nor RT, the one that does is Doom Eternal which has awful textures, RT is useless when the game has this major issue.
My point is, most games don't support DLSS (FSR) and require per game implementation, if nVidia managed to do it through an option in their drivers for all games (or at least DX11/12) then I would be sold on wasting space on those tensor cores.
As for RT, GPUs aren't fast enough similar to the 6800 ultra back in the day with dx9c, even the mighty 3090ti struggles, hardware acceleration is not enough, maybe they should've spent more silicon budget on accelerating Ray Tracing, but then AMD would destroy them in every other game.
Hopefully in the near future Microsoft will push for DXR, forcing all vendors to accelerate ray tracing the same way.
#29
wolf
Better Than Native
Xex360I am glad that you found some use for them
Honestly in the ~2 years now I've had the 3080, I've found heaps of games to use one or both (RT or DLSS), Metro Exodus EE, Doom Eternal, Control, Dying light 2, Deathloop, Spiderman, Crysis Remastered, GOTG, MSFS 2020, RE Village and Wolfenstein Youngblood - all played in that timeframe. But it also caters to what I want, cutting edge rendering techniques and visual fidelity
Xex360As for RT
I keep hearing they're not fast enough, but targeting 3440x1440 @ 144hz or 3840x2160 @ 120hz I've enabled RT in every game that supported it and had a fantastically playable and visually next-gen experience.

Yeah, not everyone has a 3080 or above, but scaling down resolution and FPS requirements to be in line with the cards targeted at those specs, I think RT is totally viable in the here and now for basically anyone with an RTX card and realistic expectations. ie, perhaps not ultra everything, as optimised settings tend to look incredibly similar but need less rendering power, but that extra power free'd up can be used on RT. And of course since basically day 1 of RTX ownership I've not only been A'ok with using DLSS, I find the visual result downright preferable, and the extra FPS is the cherry on top.
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#30
Tomorrow
wolfHonestly in the ~2 years now I've had the 3080, I've found heaps of games to use one or both (RT or DLSS), Metro Exodus EE, Doom Eternal, Control, Dying light 2, Deathloop, Spiderman, Crysis Remastered, GOTG, MSFS 2020, RE Village and Wolfenstein Youngblood - all played in that timeframe. But it also caters to what I want, cutting edge rendering techniques and visual fidelity
Metro EE is the only one where RT is more than an afterthought. Doom Eternal got RT reflections but way after launch so most pople had alreadly played trough it before the patch. I dont remember if Control had RT from day 1. Same with Crysis Remastered.
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#31
wolf
Better Than Native
TomorrowMetro EE
Definitely one of the fuller implementations, but Dying Light 2 has the same RT GI.
TomorrowControl had RT from day 1
Indeed.
Spiderman has excellent RT reflections and DLSS, the others are a combo of RT and DLSS, where in some DLSS was either the only feature or the far more impactful one, but I have seen enough RT in them all to be totally sold on it as a concept and I use it wherever possible with few exceptions.
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