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[Eurogamer] Nintendo NX Powered By Nvidia Tegra - Page 6

post #51 of 56
Quote:
Originally Posted by SpeedyVT View Post

Not even near as powerful as the XBO. It uses FP16/16 to do FP32. That's not even FP32 it's actually half the math. When you do floating points in a 3D matrices you're raising it by the third power so imagine (32^3 = 32768) vs (16^3 + 16^3 = 8192) that's how much an accuracy difference in the rendering power of XBO is to the NX.

XBO can do FP32 and FP64.

Speculation now, since we don't know if they'll go with the X1 or a X2.. But no mobile websites are posting about rumors/speculation etc about the X2. Where else gaming websites are posting that Nintendo is going with X1.

Either ways you gotta figure man this is supposed to replace the Wii U/3DS so I'm sure their banking on it being more a of a 3DS successor over the Wii U.

EDIT: X2 is in the wild, just in car tech.
Edited by Rei86 - 7/28/16 at 10:24am
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post #52 of 56
Quote:
Originally Posted by Rei86 View Post

Speculation now, since we don't know if they'll go with the X1 or a X2.. But no mobile websites are posting about rumors/speculation etc about the X2. Where else gaming websites are posting that Nintendo is going with X1.

Either ways you gotta figure man this is supposed to replace the Wii U/3DS so I'm sure their banking on it being more a of a 3DS successor over the Wii U.

EDIT: X2 is in the wild, just in car tech.

I agree, I just don't want people to assume that they're going to get an XBO in their pocket. It'll definitely be better than a 3DS. They are shooting their hopes too high and not looking at the actual performance schematics. FP16/16 is great for 2D rendering though.
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post #53 of 56
The main problem with current mobile SOCs is also memory. They do not come close to the stuck PS4 and Xbox One have. DDR4L can only do so much.
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post #54 of 56
Quote:
Originally Posted by ZealotKi11er View Post

Nvidia will rip off Nintendo, Nintendo will rip off their fans. They said they are not going to sell at a loss. I cant see this under $250 USD. It might be my first Nintendo system I buy personally since NES if it's a powerful portable.

I'm optimistic. Tegra is capable of roughly PS3 era grahics, and the screen is only 720p. Graphics should look pretty enough.

I am excited about the cartridges. Nostalgia factor is over 9000.
post #55 of 56
Quote:
Originally Posted by SpeedyVT View Post

Not even near as powerful as the XBO. It uses FP16/16 to do FP32. That's not even FP32 it's actually half the math. When you do floating points in a 3D matrices you're raising it by the third power so imagine (32^3 = 32768) vs (16^3 + 16^3 = 8192) that's how much an accuracy difference in the rendering power of XBO is to the NX.

XBO can do FP32 and FP64.

Tegra is not using FP16/16 to do FP32. You are spreading nonsense here also.

I will stick this here.
Quote:
Double Speed FP16
Last but certainly not least however, X1 will also be launching with a new mobile-centric GPU feature not found on desktop Maxwell. For X1 NVIDIA is implanting what they call “double speed FP16” support in their CUDA cores, which is to say that they are implementing support for higher performance FP16 operations in limited circumstances.

As with Kepler and Fermi before it, Maxwell only features dedicated FP32 and FP64 CUDA cores, and this is still the same for X1. However in recognition of how important FP16 performance is, NVIDIA is changing how they are handling FP16 operations for X1. On K1 FP16 operations were simply promoted to FP32 operations and run on the FP32 CUDA cores; but for X1, FP16 operations can in certain cases be packed together as a single Vec2 and issued over a single FP32 CUDA core.

There are several special cases here, but in a nutshell NVIDIA can pack together FP16 operations as long as they’re the same operation, e.g. both FP16s are undergoing addition, multiplication, etc. Fused multiply-add (FMA/MADD) is also a supported operation here, which is important for how frequently it is used and is necessary to extract the maximum throughput out of the CUDA cores.

In this respect NVIDIA is playing a bit of catch up to the competition, and overall it’s hard to escape the fact that this solution is a bit hack-ish, but credit where credit is due to NVIDIA for at least recognizing and responding to what their competition has been doing. Both ARM and Imagination have FP16 capabilities on their current generation parts (be it dedicated FP16 units or better ALU decomposition), and even AMD is going this route for GCN 1.2. So even if it only works for a few types of operations, this should help ensure NVIDIA doesn’t run past the competition on FP32 only to fall behind on FP16.

So why are FP16 operations so important? The short answer is for a few reasons. FP16 operations are heavily used in Android’s display compositor due to the simplistic (low-precision) nature of the work and the power savings, and FP16 operations are also used in mobile games at certain points. More critical to NVIDIA’s goals however, FP16 can also be leveraged for computer vision applications such as image recognition, which NVIDIA needs for their DRIVE PX platform (more on that later). In both of these cases FP16 does present its own limitations – 16-bits just isn’t very many bits to hold a floating point number – but there are enough cases where it’s still precise enough that it’s worth the time and effort to build in the ability to process it quickly.
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post #56 of 56
Quote:
Originally Posted by Rei86 View Post


Oh I know, even right now the X1 is still a great chip (seeing how most of SOC's feel stagnate atm)... But yes I also know why it didn't successed. Developers weren't on board nor where hardware manufactures. The last time the X1 was used that wasn't a nVidia reference design was the Nexus 9 from Google/HTC. And that tablet had some software stability issues and such with the X1 chip being the issue where a good few games wouldn't run on it.

Anyways this blows me away since Nintendo has been partners with ATi since the GC and continued with them on the Wii and Wii U. So this change does make since with going with nVidia since they do a have a powerful SOC to offer up vs AMD. Also I'm fine with my handheld/console giving me 1080p60 LOCKED.

 

More than likely because AMD does not have ARM SoC designs. AMD sold its mobile graphics division to another company. Going with Nvidia for this project probably made financial sense because they're most likely dirt cheap as they're not power efficient enough for smartphone use. That and the fact that Qualcomm has a superior LTE modem design over others, including Samsung.

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