mas,
Cray can't afford to pay for any co-engineering, Intel's paying for it lock stock and barrel. That is what is the no-brainer.
Nope. Intel is paying for it with money they took out of AMD's pockets.
BTW, I have heard around the net that AMD threatened Cray if they "even tried to talk to Intel". Sounds serious, if true ;)
"Now, we're not ones to go 'round spreadin' rumors,
Why, really we're just not the gossipy kind,
No, you'll never hear one of us repeating gossip,
So you'd better be sure and listen close the first time!"
IMHO