I am planning to buy Lenovo x260. It has Intel HD Graphics 520. I am wondering if I get the more expensive choices, will it improve my gaming experience. I occasionally play Blizzard games (WOW, Diablo and Starcraft). The CPU and RAM options as follow: CPUs ( i5-6200, i5-6300 or i7-6600) .RAM (16GB DDR4-2133MHz SODIMM or 8GB DDR4-2133 SODIMM)