vortexIII 17.3"

CPU: i7-3610QM (2.3 Ghz) 6mb cache
Amd Radeon HD 7970m -2gb ddr5 ram
750gb harddrive
ofc using the cooling past aswell
But i was also wondering if the other laptops on here that use a GTX 670+ example can have GTX sli or anything?