Yeah I go to misterxmedia, so ban me.
But why there is no disscussion of xdma, two different L2 caches: both 512k with one 4 8-way module. However, the other 512k l2 is 16 way and is per GPU. Why no discussion of the 16 pixels per vsp per cycle with each pixel being 32bpp or 32 bits. THIS ALL FROM THE XDX.
We did talk about the XDMA. Go back like several pages. XDMA is the high bandwidth PCI version of an external connector used to link GPUS into Crossfire mode. That's great it's used to transfer larger completed frames greater than 1440p back to the master GPU for display. Except it's entirely pointless in this scenario for the main reason that X1 has unified ram so there is no reason for that copying or that bridge to exist.
You claim there are two GPU do you also now claim that there are 16 GB of ram? Can you show me where that is? Because even with 2 GPUs it's still going back to that 8GB DDR3. If that's what's happening then XDMA is useless. The SDK is also not up to date either did you mention that as well? There is tons of information that has no relevancy to Xbox one. The summary still indicates that the Xbox GPU is running at 800Mhz and the processor at 1.6Ghz. But we already know that to be false.
So what's more likely here, documentation from older SDKs that was never culled and updated everywhere? Or a hidden GPU?
Do you know how scientific method works? We build upon what we know. Correlation is not causation. The Xbox one is built upon countless amounts of technology and evidence before it. No magic. We can determine the composition of a star millions of light years away because of the light spectrum it produces. Are you telling me that we can't take a proper X-ray of a silicon chip? MS has provided all the information and all the architecture. They showed the dual GCP, they showed the dual render pipe. They've said flat out there is no dual GPU.
The prospect of discovery is clouding your ability to think critically. It's like me making the claim that giants, hobbits and Dragons exists. Only
You can't see them or feel them, but I have the bones of midgets, dinosaurs and cavemen to prove it.
Proper discovery is about working with the evidence that is displayed before you, working with that and replicating the results. That is discovery, sometimes it creates things that we didn't know. When people were playing with electricity they didn't know it would lead to computers. We have a situation with dual GCP and render pipes but we aren't hoping and using wishful thinking that it becomes a dual
GPU. We are using our knowledge of what we know about the chip, based on GCN, looks like a Bonaire, its output performance levels, power output, the power output and performance of similar devices and using that as a basis for a measuring stick for this new device. We can look at its competitor which is based on the same processor, based on the same GPU and have similar memory setups to PC and we can look at its performance and make very direct comparisons in performance profile. You have no reason to believe that dx12 will unlock some mysterious silicon that doesn't exist. Why wait until dx12? They certainly didn't wait to allow esram and DMA engines to be used. Why the slow down on dual tender pipes and GCPS and the dual GPU?
I'll let you in in our secret. They aren't. They've likely always been in use always. That dual GPU doesn't exist. DirectX12 will help improve things for Xbox one, maybe make better use of it, but there is nothing behind the curtains.
Stop chasing something that doesn't exist.