nop, only on 950mhz,(core config on start) but i think on stock frequency + smartreflex, in any case wile extend more life battery.
"smart reflex" very interesting and relevant technology for mobile processors and systems.
and I can assure that it prolongs the life of your battery to 150-180%.(950+)
on stock frequency wile be to effect + 10 - 30% more uptime.
my english is so bad, but you can read more about smart reflex technology, to understend how it works.