Replies to post #52954 on Intel Corp (INTC)

[kpf]

you can't get extreme low power Silverthornes from Penryns no matter how much you chop or shut parts off

Sure you can. Back on an envelope math is sufficient to understand why:
A DC-SKU from Penryn fits into a power envelope of 30Watts to allow a mobile part. This is a 100+ sqmm die.
Features of Silverthorne use about 25sqmm of transistors, thereby using a fourth of power, this gets you to 7,5 Watts or so at this frequency. Reducing the frequency to half of the above reduces powerdraw by the square of the denominator, which gets you below 2 Watts. There you are. Embarrassingly simple, isn't it? ;-)

K.