sentence1: The pc1000 and pc1500 platforms were described in 2006 with the VIA C3 processors and the pc3500 was introduced in August 2007 with the VIA C7 .
sentence2: The pc1000 and pc1500 platforms were introduced in 2006 , using the VIA C3 processors . The pc3500 was described in August 2007 , using the VIA C7 .