it is a good combination if you play to game on low or medium setting most of the time at 1366x768 res.you can play some games at high but require tweaking your in game setting.for video editing i would suggest getting at least a quad core cpu.
I have the same gpu as yours and I was able to play at high setting these games
Resident evil 5 and 6
Assassin creed black flag and rogue.
Bf3 and Bf4
Metal gear rising 2014
sniper elite 2 and 3
sniper ghost warrior 2
crysis 2 and 3
COD MW 1 2 and 3 BOPS 1 and 2
Medal of Honour 2010 and warfighter.
Batman Arkham origins and arkham city and many other games