PlayStation 4 (codename Orbis) technical hardware investigation (news and rumours)
- Thread starter Love_In_Rio
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It'd be a bit of a let down for developers, a lock to 5GBs. After their enthusiasm after the reveal, "wow, so much RAM!" and presumably working with 3.5 gigs before then, this whole, massive splash-out on expensive RAM nets them another 1.5 GBs only?
why don't. It's reasonable that both gaming resource and system reservation grows with the ram upgrade. maybe they are taking space to catch the competition system features, who knows? but it make sense to me, and 5.5 GB of GDDR5 seems enough for a 18 CU gpu
Love_In_Rio
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As ERP said, the flops of a CPU are much more suitable for things like contact logic in physics ( clothes, hair...). Making particles flight is good for a gpu, but giving contact logic for example to these particles is more suitable to a cpu fpu ISA.
Love_In_Rio
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Latest rumors: speech recognition in PS4:
http://kotaku.com/talking-to-the-ps...m_source=Kotaku_Twitter&utm_medium=Socialflow
Maybe they want to leave space free for things like this.
I am considering audio, videocamera management and other task that can be healty offloaded from cpu, freeing up a lot of time for general processing (that I agree is best suited to cpu)
adding a mere 12.5 GF to cpu with an upclock is worth in you opinion?
Love_In_Rio
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Seeing what developers made with the 5-6 Gflops of the Emotion Engine sure.
5-6 GF from the 2001 means that going from 1,9 TF to 1,91 will do a difference?
I'm not a game developer but I don't believe so
Love_In_Rio
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Well, that´s like that in all unified memory systems, isn´t it?.
Nail on the head.
Although memory is something they could change like they did with the PS3. So it may not be impossible for them to use a gig of ram for the OS and other task. With PS4 using BSD OS has confirmed by cerny. It would be very strange if they went from 0.5 to 3 gig fixed.
(((interference)))
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While I think only 5GB available to devs exceedingly unlikely for PS4, having two cores reserved could be plausible (matches up with the KZ:SF tech presentation).
That might mean that the 720 will have an advantage on the CPU side of things though, because despite having two cores reserved it also has SHAPE which will save a CPU core or two worth of audio processing (how much CPU time is KZ:SF using for audio?).
So that could make things more interesting.
That might mean that the 720 will have an advantage on the CPU side of things though, because despite having two cores reserved it also has SHAPE which will save a CPU core or two worth of audio processing (how much CPU time is KZ:SF using for audio?).
So that could make things more interesting.
Both consoles have additional audio chips so I doubt there will be any advantage there. Shape is beefier as its also doing kinect according to vgleaks.
I doubt move features will be pushed like kinect so the additional image and sound processing required for 720 for move games will be done on cpu as and when its needed.
But what do I know I am just thinking logically there I have no insider knowledge.
I doubt move features will be pushed like kinect so the additional image and sound processing required for 720 for move games will be done on cpu as and when its needed.
But what do I know I am just thinking logically there I have no insider knowledge.
I think the audio block on Orbis has only been described as audio decompression and not any of the processing SHAPE has, but I may be wrong on that.
Note also that we're not doing comparisons yet. We can probably open that discussion on the 21st/22nd (and no doubt close it on the 23rd or 24th due to noise and bickering!
)
Note also that we're not doing comparisons yet. We can probably open that discussion on the 21st/22nd (and no doubt close it on the 23rd or 24th due to noise and bickering!
)I wouldn't make too much of a deal out of any possible audio processing, most people use their TVs for sound output, and that's entirely too low-fi to make any difference regardless how much processing you throw at it. Graphics overall have a much much larger impact than sound; going from mono to stereo is a large improvement, surround sound a slight improvement beyond that (and raises hardware stakes considerably). Anything further is bound to be marginal at best, and at what cost to games developers? Will any advanced audio processing actually see any use in the average durango game?
I quote DF fromTwitter:
"Killzone: Shadow Fall profiler showing six AMD cores available to PS4 gamedevs. Currently in a state of flux and could change apparently".
It was described as an audio processor. It was also described as being able to handle hundreds of mp3 streams, but there's no reason to conclude that is its only capability.
It's a little confusing since he's saying the 5GB game RAM doesn't include heap and system services. In the KZSF chart, I think heap is counted in their memory map. If both are true, it may mean that a game may yield heap memory when other tasks such as video conferencing are active. But it can use more than 5GB.
As for audio, vgleaks mentioned audio processor, not audio decoder. Both PS3 and Vita have dedicated DSP-like capability for game audio processing. I vaguely remember ERP mention that developers have no direct access to the audio h/w. It is accessed via API. If so, the audio stack may be offered as a system service.
We will hear more from Sony no doubt. ^_^
EDIT: Since we know the ARM CPU uses the GDDR5 RAM. It would make sense for background tasks to use up part of the 8GB.
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