What sort of other games and what's your budget? Because if its only minecraft, idk if it would be worth it as Minecraft has low system requirements.
Actually Minecraft is one of the most demanding games out there. Once your PC can handle it with maxed out graphics, you can probably play many other games too. Just pay attention to Pixel/Vertex shader version.
Now this has been posted serveral times for the OP, you could probably look around in this section ...