TRUE XB1 vs PS4 spec comparison

[dahuman]

Adinnieken said:

dahuman said:

Adinnieken said:

drkohler said:

That is not how memory controllers work. I have explained (to the best of my insight into the technology) how the gpu mmu crossbar works in another thread. I'm not going to do that again.

The 204GB/s number thrown around by ms is completely bogus (and probably corresponds to creative accounting for some rmw cycles inside the gpu caches). At this time, I stick with a maximum achievable bandwidth of approx. 150 GB/s (for some peculair access patterns). Until a REAL ms engineer comes forth and explains the REAL functions of the gpu crossbar, we should take the numbers forwarded by ms pr speak as rumours (or extremely creative accounting).

http://www.eurogamer.net/articles/digitalfoundry-vs-the-xbox-one-architects

He's not really wrong Adinn, while his probable real number is guesswork, he's saying achievable, not theoretical maximum at peak, which neither console will be able to do anyways.

I think though in my original comment I acknowledged this.  The realworld bandwidth that Microsoft has achieved is 70-80% of the maximum theorethical.  And they state the reason why no system can achieve the maximum theorethical, not even Sony.  I don't disagree that theoretical maximum's aren't necessarily a figure we should use, but you can't say the PS4 will achieve 176GB/s and then say the Xbox One won't achieve its theorethical max when neither can reach it.

Hence why I said it's how you manage the RAM in my individual post, however fast the eSRAM or however low the latency might be, it's still just 32MB of it with 8GB of DDR3 that's much further away. The same can be said about the PS4's 8GB as it's by default further away from the GPU and CPU even though you have more of it at that speed. Either way though, as far as overall graphical processing abilities go, PS4 currently does have the edge, not that I think it really matters since you have something like the Wii U(weaker) on the market and more powerful hardware in PCs and the upcoming Steam OS powered PCs(AKA Steam Box.)