Presumably you mean GB/s and, while I'm no techie, I don't think it means that. I'm taking it to mean that while only 32MB of the RAM is capable of 100 GB/s bandwidth, in parallel it could utilise the other RAM pool and thus it amounts to up to functionally 32MB at 170GB/s + everything else at 70 GB/s.
Although someone please correct me if this is completely off base.
To reduce lag I'd suggest it would.
Now, hands front - I have no idea what am talking about , but I can struggle to mould things together.
Kinect will have a bunch of stuff on the harddrive, this needs to be active as its running. A high quality 3D Camera is constantly taking images of the room; it stores a number of previous images in order to best identify significant movements.
The live images and 'saved movements' get compared to indentify different input.
This isn't some touch screen where its all quite easy, the reason I think the Kinect would be using up that RAM would be because it is now Kinect 2.0 and having to process 3D images with the aim of now being lag free.
He means that were the Esram to be used for free AA, it would only be sufficient for 2xMSAA at 1080p (not 4x, from what I have read). That would pretty much use up the entirety of the 32mb Esram solely for that purpose.
Based on what they wrote, it appears that the GPU can access data from esram and main ram at the same time. So in that case, the bandwidths can be combined. This is still limited to how fast something different can be put into esram to make the bandwidth more useful.
looks like Kinect built-in (at least partially) and also the HDMI in is for your cable/dvr box. You pass through your box through the XboxN and it will synthesize with your box to create a new way to watch movies/TV. Your DVR can do the recording or the Xbox can, so now you have one device through which you can watch or listen to all your entertainment.
As the transition to downloads continues, Microsoft wants to be that link and as internet TV grows, MS wants to be positioned right there to make it easy for everyone. Expect a remote in every box.
Basically, if the ESram is the frame buffer, it needs to store all the pixels in the frame. At 1080p 4xmsaa and 4 bit coulour depth, the rough amount of memory taken up would require 2x4x4=32 mb, which is just about the size of the esram. Can't do much more than that. Tiling would burn up bandwidth to the main memory, so it is best to avoid it if possible.
The HDMI-in, to me, suggests a pass-through for cable. I'm not sure exactly how it'd work, but I imagine it'll use HDMI-CEC so you can control your cable box from your console. MS tried to actually provide the TV themselves with the IPTV thing, and that failed to get off the ground because the networks like the current arrangement more than what MS was offering, so the next best thing is to run the cable TV through the Xbox.
I don't know how much info or interactivity the 360 can glean from the cable box over HDMI, however, so it may be a bit of a hodge podge of interactivity, and for that reason I don't know how compelling this function will be: you'll still need the cable box, but it may be a neat feature for people who already have a reason to own the next Xbox.