Laptop

I am thinking about getting a laptop to work on the ue4, I know laptops suck for doing this but for my current job I travel alot.
What to you guys think of these:
Lenovo Y510p:
Processor
4th Generation Intel Core i7-4700MQ Processor (2.40GHz 1600MHz 6MB)

Operating System
Windows 8.1 64

Display
15.6" FHD LED Glossy (1920x1080)

Graphics
NVIDIA GeForce GT755M GDDR5 2GB

Memory
8.0GB PC3-12800 DDR3L SDRAM 1600 MHz

or

http://www.xoticpc.com/gigabyte-q2556ncf2-p-6918.html?wconfigure=yes

my only thoughts would be to try and increase the ram to 16gb, no idea when the nvidia 800 series will hit the market, i’ve seen the 820m on sall but i doubt that its an option for using UE4

last i check the 800 series card is already out.

http://www.amazon.com/gp/product/B00IKF2H12/ref=ox_sc_sfl_title_1?ie=UTF8&psc=1&smid=ATVPDKIKX0DER

if you have 900 buck maybe this would be good for you

so trying looking around to see if you see any other 800 series build from other stores.