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Norris2k on 03 January 2015
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mine said:
Norris2k said:
There is no way the XBone with 3 OS and virtualization requires less cpu than the lightweigh PS4's OS (BSD, that's light). So, this optimization will come to a high cost, or will happen on the PS4 as well.
Also it leaves the XBone with 2 bottlenecks compared to the PS4 : the GPU, and the memory bandwidth. And that not something one more cpu can change.

Oh that virtualizations costs are that high? really? 

Do you really think that all cores are switching at regular intervalles between host and virtualized client?

Nope - of course they don't do. Even on your desktop computer any virtualization won't do that as long you didn't manage to misconfigure it.

 

BTW: the PS4 has a CPU bottleneck. And thats something no GPU can change.

My main point is that virtualization and 3 OS (including windows) cost is higher than one native plain old BSD (which is a very light OS). And that's a fact.So, Sony could also give one more CPU... but ! What I consider a "high cost" is not a CPU cost, but the loss of reactivity coming from not having 2 reserved CPU anymore for OSs and apps. I'm not exactly sure if the will do OS and apps on on single core, which seems very unreactive, or be able to borrow resources from the 7 CPU, which would lower the impact.

BTW, I'm not aware of a clear CPU bottleneck on the PS4. Only Ubisoft on AC talk about that... and ends with about no difference. The GPU and memory bottleneck on the XBone is on the contrary pretty clear : most game look better and have a better resolution on the PS4.