ask any woman.

it's not the size.

it's how you use it.

:-)

seriously, google up Dennard Scaling

it used to be a truism that a smaller transistor was both faster and used less power.

the physics of this only work up to a certain point, after which you can no longer shrink the supply voltages. ergo, continuing to shrink a transistor would increase its power consumption rather than lower it.

maybe the suits at fancy excimer and immersion fabs are excited about feature-size, but its real return-on-effort benefit has mostly gone to hell ever since the marketing departments got ahold of 'nanometers' and decided since they couldn't rant about GHz anymore -- silicon speed having hit the brick wall -- they had to tout "ours is better" somehow.

this might be worthwhile for you

http://www.10stripe.com/articles/what-does-process-size-mean.php

or, if you're so inclined:

http://spectrum.ieee.org/semiconductors/design/shrinking-possibilities

GLTA,

R.