SiS is one of the Taiwan's three key chipset developers.
VIA's marketshare far outweighs those of SiS and Acer Labs. SiS will sample its P4 chipset in Q3. The company reckons volume production will follow a month after that. Not that Chipzilla would be too chuffed about if it did. Chipzilla hopes so too - it claims the ramp up of P4 production will be the steepest in its history.