Games I own but need a new GPU to play at a decent framerate

Arma: Cold War Assault
Batman Arkham City
Battlefield Bad Company 2
Battlefield 3
Battlefield 4
Bioshock
Bioshock 2
Bioshock Infinite
BIT.TRIP Runner2
Borderlands
Borderlands 2
Brutal Legend
Burnout Paradise
Counter Strike Global Offensive
Crysis 2
Dead Space
Fallout 3
Fistful of Frags
GTA IV
Grim Fandango Remastered
Guacamelee
Hitman: Blood Money
Hitman: Absolution
Insurgency
Just Cause
Just Cause 2
Left 4 Dead 2
Medal of Honor
Metro 2033
Mirror's Edge
PAYDAY: The Heist
Poker Night at the Inventory
Portal 2
Sniper Elite V2
Sonic Generations
Surgeon Simulator
Tabletop Simulator
Tiny and Big
Worms Ultimate Mayhem