You can of course play most games on that PC but you need to lower your details. Your screen resolution can be important here cause at lower resolutions games tend to tax on CPU more and you have a "not bad" CPU there. But higher resolutions (and more detail levels) require a "decent" GPU. Your GPU is low-end and old but may satisfy you in games, depending on what games you choose to play and what detail level you want to see. You should have no problems with that i5