Next Generation Hardware Speculation with a Technical Spin [post E3 2019, pre GDC 2020] [XBSX, PS5]
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Love_In_Rio
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Now were talking.
AbsoluteBeginner
Regular
Lol that rumor just keeps coming back. And its the best one yet IMO.
DavidGraham
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So now that both consoles are confirmed to have what many of us were speculating about for a whole year, it's time to discuss how their implementation of RT will work along side the requirements for 4K resolution.
We can safely postulate the level of their RT support to not exceed an RTX 2070 Super, I expect their compute performance to be on that same level too. And given the increased graphical fidelity that will be expected of next gen titles, is it logical to assume 1440p upscaled + medium RT integration for the first wave of games?
We can safely postulate the level of their RT support to not exceed an RTX 2070 Super, I expect their compute performance to be on that same level too. And given the increased graphical fidelity that will be expected of next gen titles, is it logical to assume 1440p upscaled + medium RT integration for the first wave of games?
Wait for the implementaton the will choose for example Crytek used with Neo noir a mix of raytracing and voxel cone tracing implementation they said with RTX they can reach 4k.
I think we will see some hybrid implementation running at 4k 30 fps and running better on high end PC GPU.
Edit:
https://www.cryengine.com/news/how-we-made-neon-noir-ray-traced-reflections-in-cryengine-and-more
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That discussion is more for the 4K gaming thread. This one is speculating about hardware, which means trying to guess the RT solutions ahead of release with no clues or pointers from anywhere!
Mihailjones
Newcomer
AMD already stated on their Future memo pdf thingy that next gen consoles will use RDNA2 so unless they talk shit, it is what ps5 will use too. It is not available to customers but it doenst mean that it wont be available for sony/ms at 2020
Still not more than educated guess.
If 7TF but 800 GB/s is true, we could try to find out how much bandwidth is a bottleneck with RTX. (Likely not possible to do so, but seeing just a 2x speedup vs. compute so often i would not be surprised if bandwidth is a major problem, and the motivation to go 800)
Also it would be interesting to know how Navi performs with Radeon Rays, to see how RT benefits from the better cache. HW RT should just share this benefit, independent form other factors we can't know yet.
I also wonder if 7TF/800 for one of two consoles could also mean the base model from two PS5.
Bandwidth bottleneck will depend on what you're doing. So same as rendering being bottlenecked either by triangle setup, or shader computing, or pixel drawing, you could be bottlenecked in RT by RAM access with hugely complex scenes, or in shader performance in shading a simple scene, or in the triangle intersect tests. Without knowing what the RT solution is, we can't really guess at anything. Well, I suppose we can present a load of different postulations but we'll have no idea what's actually going on.
The only thing I think it safe to say is, given 7TF shading/compute power and 800 GB/s BW, the system is expecting lots of bandwidth to be used raytracing, so maybe we should start with considering what RT solution is going to favour BW over other solutions? Are KD-trees more BW hungry than BVH? Quickly Googling around, it seems so, which perhaps gives legitimacy (in the one rumour supporting another without any real proof!) to the idea of Sony using a KD-tree solution.
The only thing I think it safe to say is, given 7TF shading/compute power and 800 GB/s BW, the system is expecting lots of bandwidth to be used raytracing, so maybe we should start with considering what RT solution is going to favour BW over other solutions? Are KD-trees more BW hungry than BVH? Quickly Googling around, it seems so, which perhaps gives legitimacy (in the one rumour supporting another without any real proof!) to the idea of Sony using a KD-tree solution.
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D
Deleted member 13524
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7TF isn't remotely credible though.
it’s possible as previous posters pointed out, it really depends on the level of RT support.
if you can offload your lighting, shadowing, and maybe other algorithms to whatever is doing the RT work, then you have a lot more room in that 7TF for new stufff.
7TF without some additional RT rendering resources is not enough.
It would be an absolute marketing disaster if nothing else. Unless of course a Pro sku really exists but then the baseline is too low. Yeah really don't know who to trust any more.
It is for a Nintendo home console.
D
Deleted member 13524
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Is it possible to launch a system with 7TFLOPs throughput that is RT capable and runs games at 1440p for 4K display after reconstruction?
Yes, that's basically a 2060 Super.
Is 7TF a credible expectation for a console launching in late 2020?
No, not at all. That's less than AMD's current midrange, built on an older node than the one the consoles will adopt.
This I'd find credible.
If they launched it in 2025.
Miniature Kaiju
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RT only solves visibility, you still have to do the shading. While it might reduce some of the compute you need to calculate some stuff, like shadow cascades for one, it also adds its a lot of compute load on its own.
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