Dell xps 15 core i7 8th gen July 8, 2019 16 32 64 128 Dell xps 15 core i7 8th generation price in pakistan Dell xps 15 9570 core i7 8th gen Dell xps 15 core i7 Dell xps 15 i7 12th gen Dell xps 15 core i7 7700hq Dell xps 15 i7-12700h