Question Speculation: RDNA3 + CDNA2 Architectures Thread

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uzzi38

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moinmoin

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With 4090 being bottlenecked by all current CPUs I wonder whether AMD tries to avoid such cases, aligning GPU performance with their plans for CPU performance. That's the only reason I can see for AMD restraining the performance of this round's marquee GPU.
 

Timorous

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Oct 27, 2008
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With 4090 being bottlenecked by all current CPUs I wonder whether AMD tries to avoid such cases, aligning GPU performance with their plans for CPU performance. That's the only reason I can see for AMD restraining the performance of this round's marquee GPU.

Launch it with Zen 4 3D.

I can also see AMD doing better in DX12 titles at 1080p / 1440p due to the NV driver overhead that really helped them in DX11 titles but is now hindering them somewhat.
 

RnR_au

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I think that was an unintentionally misleading quote. Won't N5 stacking only be ready by the end of this year according to TSMC?
I had a quick google. Seems N5 on N5 is delayed till 2023. Interestingly there is no mention of N7/N6 family on N5, but there is a mention of N5 on N3... if I'm reading the table right...

1665577692023.png

Snagged from https://semiwiki.com/semiconductor-...posium-review-advanced-packaging-development/

So yeah seems 7800X3D is definitely 2023. Maybe even late :(
 
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Kaluan

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If we take AMD at their word on stage they said this year for Zen 4 3D parts.
Maybe that just means "Genoa-X will be sampling to our closest partners and customers", a-la how they did with Milan-X and Azure Cloud or wtv in Q3-Q4 2021.

Either way, stacked RDNA3 doesn't seem to be constrained by any of those considerations since it's stacked dies are not on 5nm-class nodes.
 
Jul 27, 2020
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So yeah seems 7800X3D is definitely 2023. Maybe even late :(
No way. It should be widely available by late January. AMD can't afford to lose mindshare to Intel. I would hate it if I see the 13900KS being paraded everywhere for being the first 6 GHz gaming CPU despite 200+ Watt power consumption in games.
 

naad

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May 31, 2022
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4090 seems to have a bit of issue utilizitng its hardware at under 1440p, probably half due to CPU bottleneck and half to due low shader utilization, probably a good niche for AMD to carve out for themselves, 3D Raphael might actually push high end GPU sales
 

moinmoin

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Jun 1, 2017
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If we take AMD at their word on stage they said this year for Zen 4 3D parts.
One of the Twitter leakers (greymon? don't remember) was linked/quoted in another thread claiming last month that mass production just started, which was one month "earlier" than 5800X3D, implying that the launch may be one month earlier as well (which would be in March).
 
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I can also see AMD doing better in DX12 titles at 1080p / 1440p due to the NV driver overhead that really helped them in DX11 titles but is now hindering them somewhat.
What if it's just an artificial and intentional attempt at sandbagging? Once AMD releases their halo part, Nvidia could just flip a toggle in a new driver release and voila! Beast unleashed!
 

linkgoron

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Mar 9, 2005
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What if it's just an artificial and intentional attempt at sandbagging? Once AMD releases their halo part, Nvidia could just flip a toggle in a new driver release and voila! Beast unleashed!
Yeah, that always happens - just like those magic FuryX drivers. It makes sense to get all of the launch reviews released with worse performance than what your hardware can really do.

Hoping for a slimmer GPU TBH. 95% of the 4090 performance with significantly lower power draw and a slimmer card would make me buy one. Until then I will stick with my 3090.
I have high hopes for RDNA3. If they can deliver on what they promised, it could beat the 4090 in raster performance. AMD's RT performance has been relatively weak, and I'm not sure if it's a priority for them.
 

Leeea

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Also, on the eve of what might be a leak with clockspeeds and performance targets, does anyone want to make their final guesses? This pump that dumps fuel into the hype train's engine ain't going to prime itself! :p

Here, I'll start. My guess for full N31 specs:
- Up to 60% perf/W uplift over N21
- 1.8x - 2x raster uplift
- 2.2x to 2.5x RT uplift
- 3.1 GHz game clock
- 375W TDP
- 24 GB GDDR6 RAM
I think you nailed it.

The only thing I can suggest is a price:
$1300
 
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Tup3x

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Dec 31, 2016
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What if it's just an artificial and intentional attempt at sandbagging? Once AMD releases their halo part, Nvidia could just flip a toggle in a new driver release and voila! Beast unleashed!
Well, they kinda did already: https://www.nvidia.com/en-us/geforce/news/geforce-rtx-4090-game-ready-driver/
These improvements include shader compilation optimization, reduced CPU overhead, and Resizable BAR profiles for Forza Horizon 5 and F1Ⓡ 22. Many of these optimizations are most beneficial in CPU-bound scenarios, enabling your graphics card to be utilized to a greater degree. In Assassin’s Creed Valhalla, Cyberpunk 2077, and Forza Horizon 5, performance improved by up to 24%
 
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GodisanAtheist

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