Interesting. I still think that 8Gb figure is completely insane though. I can't see them needing it if the specs are on the lower end of the rumor spectrum. Can they even do much that would need that much with a lower end GPU? Unless the CPU is a real beast, then we may see it getting more use.
EDIT: Ugh, I can't seem to form sentences correctly tonight. Hopefully my point gets across. I'm just curious and want to see what both hardware makers goals are for next-gen.
8 is insane no matter which way you slice it though if it was running the OS and they wanted very easy moving of games from PC to the 720 that could eat up a good deal of ram and would make some things easier when not having to worry about a ram ceiling when a PC game is ported. Which some devs have made clear is a big deal.
I would assume a very high goal for MS is to make PC porting as easy as possible and yes even with that card you could run those games but I don't think it would be too impressive. However since there are chips that are in the same or a small amount more price spectrum as that low end that offer far more punch it currently makes no financial, system, or goal sense. It seems like an artificial lowball spec.
We are talking less than 15-20 bucks more for a much more powerful GPU in bulk. A good amount of money when you multiply that by say 10 million sales but nothing that would indicate MS wouldn't do it. In one of the forums they were showing one that would run only 5-7 bucks more and was still a good deal more powerful and used nearly the same wattage and had the same heat. Thats why so many are stating its either some kind of error or 2 system specs being mixed because it just doesn't make sense. Not to mention others who have gone on record, developers I mean, who said that the 720 is very powerful. Shrugs, I just don't see a game dev saying that if it was just a CPU. It also only trully seems to have been mentioned as a source 1 time. But it exploded. I attribute a lot of that due to it making no sense.
FYI I am just going on what some of the devs have said, some of the Beyond3d peeps(I have a great deal of respect for those dudes and their knowledge past and present), and various tech peeps on forums who run this shit every time a system comes out. People could be missing something, or even more importantly something else could be going on that no one is preparing for. Currently, from those that have known what they are talking about during past system releases and so forth, they keep posting that it makes no sense at all. Possible, but just doesn't make sense. Shrugs, take that as you will.
That is ignoring the constant rumors about a settop low wattage system low power system with BC and an actual game system from MS with far more power. And the other rumor that the 6770 isn't a "normal" one at all. Whatever the hell that means.