I am the last person in the world to doubt STI's abilities to create a monster CPU, as many of you already know However, I am a lot more conservative with regards to the specifications on the PS4 because of a few things.
1. The success of the Wii, things will be different going into next generation. Expect to see Sony focus on some type of revolutionary(or not) interface, perhaps utilizing built in cameras that can track and diffirentiate between several bodies. This is why I have dubbed the PS4 CPU the Sense Engine.
2. Kutaragi is(largely) out of the picture, he was the major drive for the most cutting edge hardware possible.
3. They will not launch at anything higher than 400 US dollars and I do not see them taking massive hits on hardware in the beginning.
4. 32 or more cores is just impractical IMO. Think of the SPE's you'll have to reserve for redundancy, sustained performance, die size, etc. It will just be a nightmare for developers, it's best to jump up clock speed and make the necessary architectural improvements for a 16-24 SPE beast, rather than throwing 32+ less powerful cores on there to inflate floating point power.
Things have changed, and while the PS4 will feature an incredible hardware spec; we will not see Sony pushing things to the max. A CPU with 1-1.5 TFLOPS computing power and a complimentary Cell based GPU will be nothing to scoff about. You'll be looking at a next gen Uncharted game looking roughly on par with the CGI in the commercial.
1 I agree Wii succes will have consequences, but not only on the controller ( I think that in most case an improve wii mote would be enough). Sony may be forced to launch a system earlier than they planed.
2 & 3 agreed.
4)It depends on when Sony will have to launch the system, 32nm has to be widely available, 22nm will could be difficult to reach (Intel is in a league of its own) Sony would have that many room for costs reductions via chip shrinking.
@32nm the cpu you describe is OK even with larger LS improved executions units etc.
But waiting till 32nm could be dangerous to Sony, Sony opponents are likely to launch their next system earlier!
could Sony face the 360 andthe Wii on the low end and 720 and Wii2 on the high end with the ps3 alone?
They could be let for some years with very few sales left!
I think it would be better to think more marketing terms like "what are our goals?" than technical one like "what could be done?"