The lovely thing about this is at least you already have a monitor, keyboard, and computer tower; However, what Noctus said is truth. That single core processor is going to hold you back A LOT when it comes to modern/current games. If you wish to "Future proof" your computer, you'll need to purchase a new graphics card, processor, motherboard (hopefully we could keep the RAM you already have to save some money). Don't worry, though, it shouldn't cost anywhere over 400 dollars to get your a good decent gaming rig going that should last you for a while.