A:Answer According to the website, by default they come with the following:
17.3 inch FHD (1920 x 1080) 60Hz IPS Anti-Glare 300-nits NVIDIA G-SYNC Enabled
There is an upgrade option for:
17.3 in QHD (2560 x 1440) 120Hz TN+WVA AG 400-nits NVIDIA G-SYNC, Tobii Eye-tracking
I believe it only comes with a 60Hz screen