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globalisateur on 10 October 2013
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fallen said:
Zappykins said:
Interesting, would you mind pointing to your sources? It will help answer some questions.

And I see it's already brought out some misinformation.

Curious, why are you pulling out one core on the PS4 for audio? It can also do some with 4 CU's of it's GPU (I know) and does have a little audio chip.


Well, I did it both ways, hence -9% raw.

 

PS4 audio chip just does compress/decompress.

 

Doing audio on CU's is apparently pretty darn difficult (difficult to synchronize due to high GPU latency).

 

Regardless, if they are forced to use up some of their 4 "extra" CU 's on audio, I think that's a win for X1. You would have to adjust those GFLOP numbers for PS4 down.

 

From what I've heard SHAPE is equal to about 1 core of audio processing after Kinect reserves. This is a VERY ballpark figure. SHAPE could be even more of a beast, but much of it (beyond the 1 core) is reserved for Kinect audio processing (which IMO sucks, I hate when X1 is weaker for Kinect's sake).

The PS4 has the audio managed by the OS (so managed by one of the 2 reserved OS cores). "Custom Audio Block: Access mediated by OS" and it has a hardware chip in order to encode and decode audio streams. The only jobs the CUs would do is raycasting (if needed) but the XOne will have to do it by its CUs. And the Shape won't do all audio jobs like reverbs.

But the effects won't be done on the CUs please stop that fallacy. The only audio work that would need to be done on CUs are the one like raycasting that need the geometry (3D models) coordinates and the compute oriented PS4 GPU (Cerny magic stuff) will be perfect for it.

The audio advantage of Xone (if it has one) can't and won't be transformed into an graphics advantage. The best case is that you'll have maybe a better sound on a few first party games. And finally we don't even have the confirmation of what part of Shape is available to the developpers. But we do know it can't do neither raycastings, neither reverbs and that it is an assumption that it can do some effects like distortions.

So it is really a leap of faith to conclude that Shape gives XOne any GPU advantage on PS4. Anyway you can take 10% off the Xone GPU Flops number, because it HAS been confirmed by Microsoft, not just a rumour this one. And those 10% are for Kinect and Snap mode, so don't take those off the PS4 GPU numbers because it has neither kinect nor Snap modes.