What GPU should I get

IJustNeedHelpForMyPC

Commendable
Jan 1, 2017
13
0
1,510
What GPU should I get?

CPU: Intel Pentium G3240
GPU: Nvidia GeForce GT 640
RAM: 8gb
Power Supply: 500w

I know its an old system that somehow still can play todays games at lower settings but Its definitely lagging behind and I wish to fix that. My max price would be $120 thanks