It's based on Win7 Ultimate x64, with various modifications, tweaks and a game booster that stops all unnecessary processes when the game mode is activated. It certainly enhanced my gaming, everything is working better on GAMER (at least for me).
For all the x's below, give yourself 1 point. [x] plays games  has dark hair  Wears a lot of black [x] 5'9" to 6'5" in height [x] knows another language  knows how to cook  likes ramen [x] likes alternative rock [x] favorite color is blue  watches anime [x] dislikes Paris Hilton [x] has NOT read Twilight series [x] replies to most PMs [x] literate when on da computer lulz
2 points for every x. [x] taller than 5'8"  sexy accent [x] likes metal [x] does not have short hair  is understanding of fangirlism  likes math [x] kind  can lead a dance  likes L more than Light  has watched Death Note  can play an instrument
3 points for each x.  plays guitar  has a cute smile [x] funny  knows how to treat a lady  can be romantic [x] likes sci-fi  likes cheesy lines [x] will not kill spiders  can sing [x] can ignore any strange outbursts [x] doesn't freak out easily  is a freakin genius