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walsufnir on 27 August 2014
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Intrinsic said:
walsufnir said:


Oh yes, if you compare this in this way, sure. But GPUs alone can't do anything. They have to be "fed" and this involves CPUs which are the same on both systems. Even more confusing and confusing the imaginary comparison totally is the fact that nowadays consoles run a fully fletched multitasking system which eats up 2 cores and 3gb of ram on both systems. So the scheduler on both systems (which also takes cpu-time) has to handle the game (which of course runs at highest priority) and has to deal with other programs that eat up cpu time. Furthermore there are caches and so on which no one takes into consideration when talking about real life performance of the consoles.

People only mention GPU and GDDR5 and conclude known percentages of advantage while you only see a part of the whole picture where all those other facts rely on.

Again, this is true but.....

Both consoles have the same CPU. And as far as games are concerned, CPUs do very specific things especially when designing on hardware so similar. But going off what he said in the interview, its clear that the APIs and drivers that govern the function and efficiency of the CPU is further along on the PS4 than it is on the XB1 as MS seems to be trying really hardto bring its APIs up to at least aprity with the PS4.

As I said, every single factor if looked at sincerely points to the PS4 not being just marginally more powerful. Like everything that could be said about the game development process or enviroment will lean in favour of the PS4. And all these little things while great on their own, has to add up in someway not somehow overall detract. The PS4 has

 

  • Better APIs (CPU realted) and a better closer to the meatl shader language
  • more GPU cores (50% more) and higher GPU compute capability (300% more)
  • while both consoles give devs access to 5GB RAM, the PS4 has an overall larger pool of fatser RAM all under onc address.
  • 100% more Render output units
  • Over 30% more texture mapping units

 

Any one of those things should give the PS4 a slight advantage, and some of them should give it a really big advantage. But somehow, everyone seems to want us to believe that all of thses things combined doesn' amount to much? I am not saying that the PS4 gives 100% perfomance 100% of the time, but neither would the XB1. 

All I really care to know is what stuff like what I mentioned above means for the respective dev platforms. I dunno, I just think that the PS4 should be capale of a lot more than a resolution bump and more framerate stability.


I know what you want to say but numbers don't add up, they highly depend on each other. If this all would apply then everything would be way better than it is currently for PS4. If your game is, let's say, CPU limited, then having more GPU power is of no use, obviously. That is what the guy is telling us when he says that they were profiling. I don't say that nothing adds up but you can't judge a whole system when you compare spec by spec. And even if you measure, you have to say what exactly you measure.

Remember the CPU benchmark which should show us which CPU is better? This test was totally useless because we didn't know exactly what they measured.

If you want to test only the CPU, then you have to test everything that belongs to the CPU so at maximum you saturate caches and then you measure. If your data is getting bigger, say 32 mb, than it should favor Xbox One CPU because it is higher clocked and can fit into ESRAM. If your data exceeds 32 mb than most probably PS4 would win again because Xbox One would need to put data into DDR3 ram. And this is just a CPU test.

So after all that is quite the thing why we see some games only 720p on Xbone while PS4 reaches 1080p (besides of easiness to develop for, of course) and why some people like Crysis can pull of Ryse from Xbone at launch.

Data is handled differently, CPU load differs, mem usage differs, everything differs and all relies on the whole system and data doesn't care about specs but how it can efficiently be handled by.