I'm new to using laptop to multibox. Basically, here's the setup I intend to create:

Main PC - 1 WoW account windows - Main toon
1 Laptop - 2 WoW account windows - 2 alts
1 Laptop - 2 WoW account windows - 2 alts

Both laptops will be hooked to a 19" LCD monitor that will be placed vertically and will display 2 windows per LCD.

My question is, what is the latest laptop graphics card that can support such a setup (without the laptop burning to crisp anytime soon lol) And what are the specifications recommended on the laptop?

Thanks ahead for all the incoming help