You might be getting a new power supply depending what video card it is. 350w isn't very strong. The cpu isn't terrible and 4gb of ram is doable for playing games. 8gb might be better for some games, but won't give you the same performance boost a stronger graphics card will usually. Since you mentioned the rather small power supply, that's what I'd concentrate on - and depends on what actual graphics card. Just knowing it's a 1gb card and worth around $100 doesn't give enough information.