Infinite Loop / The Apple Ecosystem  New Intel ULV processors
still a bad fit for MacBook Air  If you were hoping for an
Arrandale makeover for Apple's ultra-thin notebook, …  Intel
finally took the wraps off its latest ULV mobile processors,
aimed directly at the ultra-thin portable category. However,
these new processors don't present a clear upgrade path for the
MacBook Air, leaving Apple with no good choices to make when it
comes to refreshing its own ultra-thin laptop.  The most likely
candidate from Intel's latest Core i3, i5, and i7 mobile
processors is the Core i5-540UM. Though its nominal speed rating
is only 1.2GHz—much lower than the current MacBook Air's LV Core
2 Duo at 1.86GHz or 2.13GHz—it can boost a single core up to
2GHz when conditions are right for Turbo Boost. Both cores are
also hyperthreaded, so some performance advantages still exist
on certain hyperthreading-friendly workloads even when running
at a lower clockspeed.  However, there's a slight potential
performance disadvantage to goi