Most of the rumours are actually one rumour repeated across the internet. We probably only have three or four rumours, and I don't think there's much agreement between them although I'm not following closely.
Perhaps, but the main rumour on the recent 720 specs (ie.
basically what vgleaks says -AMD 8 core CPU, 8GB RAM, AMD GPU w eDRAM) correlates with Digital Foundry's investigations, what Charlie from semiaccurate is saying and lherre and bgassassin's comments.
There is also the fact that vgleaks seems to be accurate with predicting the Wii U specs (see the 3 enhanced Broadway cores they had vs all the Power7 rumours) and lherre confirmed the accuracy of their Orbis alpha kit specs.
And since we know (
from Digital Foundry's investigation of DaE) that they definitely have access to a legit devkit, it seems reasonable that they would also know the specs of that devkit.
So, while sure, things could change in the final hardware and it is possible that the HD6870/6950 in the leaked devkit is underclocked, or the 8 cores are just to deal with current low yields etc, I think it's reasonable to believe that the next gen consoles will be similar to what the most credible rumours suggest.
I mean look at paranoid Apple and their product pipeline, we know pretty much everything they're doing, Retina MacBook, iPad mini etc. I mean we knew the iPhone 5 was going to be aluminium bodied and 8 mm taller than the 4S nearly a year in advance.
How can we know
nothing about MS and Sony's next gen machines?
That's an incredible proposition, at least
some of the rumours floating around must be legit (otherwise you'd have to believe that of the hundreds of people in the know
no one is talking).
No, the real difficulty is in going through all the rumours, ascertaining which ones are the most credible and synthesising a reasonable looking picture out of them.
I'm pretty sure if someone looked back over this whole thread from the start of 2012, they'd be able to do just that; I only pop into this thread from time to time and have already forgotten most of what was posted.
For example I just did a quick search and found two statements (from back in June) by lherre and bgassassin that perfectly agree with the RAM specs in the vgleaks page.
Lherre has said that Next Xbox CPU is not PowerPC and 8gb RAM.
bgassassin I said probably when I should have said definitely. As for my info it wasn't quite like that. For the memory it was said that the 12GB was for the dev kit with 8GB being the final. I was only told a "multi-core" CPU. And when it came to the GPU all I got was "1+ TFLOPs". That's why I'm still hoping/waiting to get clearer info.
http://forum.beyond3d.com/showthread.php?p=1648986&highlight=lherre#post1648986
http://forum.beyond3d.com/showthread.php?t=31379&page=520