I use a Toshiba S50-B-15N which is a lightweight laptop with Core i5 and AMD M260 graphics. I play at 1080 resolution and never reduce the graphics settings - there is no lag and it's smooth as long as I use a cooling pad, if not the laptop can start to stutter if the graphics card throttles back due to heat. Laptop has 8GB of RAM. The thing I liked about the Toshiba is the very nice screen (I'm a photographer), it's very slimline and light (I travel a lot as an airline employee) it has an excellent backlit keyboard for late nights in hotels and a mix of USB 2 and 3 ports. Plus it's not a high end gaming machine so isn't heavy or crazily expensive - an excellent all rounder