Lol will run with max settings@1080@~100FPS on a 650,but the game needs a high single thread speed.
[video="https://www.youtube.com/watch?v=-wek5XoyRRU"][/video]
BF4 will easily run 720@high at ~60fps ,the 650 get's bottlenecked by the CPU here,look at gpu load.
[video="https://www.youtube.com/watch?v=2RspGYeU7q8"][/video]