Some of Nvidia partners will ship the G84 based Geforce 8600 GTS cards at speeds faster than 700 MHz.
This card should be really overclockable but you can expect
the usual suspects to overclock the special versions of the cards all the way
above 700 MH.
The cards are still scheduled for the 17th, less
then two weeks from now and the samples are floating around under a veil of
NDA. Geforce 8600 GT can also be overclocked but we are not aware that any of
the partners will do it.