[quote]Originally posted by snoopy:
<strong>However, we could still have a trade off between a slower, less costly dual core package, and two higher clock speed single core packages, which cost more but may have better performance. (This assumes that power is a limiting factor, as I suggested in my previous post.)</strong><hr></blockquote>
And I'm hoping the trade off would be between one dual core 970's... and TWO.
You are right, heat dissipation is very important.
I don't know that we'll see something like this:
1.5 GHz dual core ppc 9x0
2.0 GHz single core ppc 970
at the same time. If they can make a 2.0 GHz single core with a reasonable success rate, they can try to make dual cores at that same time. -> any time one of the cores fails they say 'oops, looks like a single core module, throw it in the 2.0 GHz single core ppc box'. But every time it _works_ they have a dual core.
That is, it is expensive to have widely different chip fab lines running at the same time -> they'd all come off of one line. The 'defects' are sold as either lower GHz parts, or single core parts or whatever - but they shouldn't be drastically different. And the dual core parts would always cost more -> tougher to make. (Any time a dual core 'fails' you get a "free" single core)
I have no idea how the heat trade off will end up working though.