My computer costed me £300. It's custom built by a friend of my dad's. It has 4GB of DDR3 ram, a triple core 3.2 Ghz processor, a Geforce GT 430 Graphics card and a 1TB hard drive, the case and motherboard are unknown to me. I may not know a whole load about building computers but I definetly know that's really good for £300. I already owned a moniter and a keyboard so that didn't cost me anything either.