HP Pavilion dv4t-5100 vs. Lenovo Y480

I am looking for an update from my 2 year old Acer TimelineX 4820TG. The Mobility 5650 on the laptop is starting to spectacle its age since I game next to my 24" ASUS monitor. I've damaged my options down to these two: *HP Pavilion dv4t-5100 - $750* Intel Core i7-3612QM 2.1GHz 4GB DDR3 STRIKE NVIDIA...

Source: http://forum.notebookreview.com/what-notebook-should-i-buy/691548-hp-pavilion-dv4t-5100-vs-lenovo-y480.html