My entire game plan for buying new computers is to get one that will be able to handle the majority of the graphic intense gaming requirements.  I learned early on that doing this easily gives my computer a 10 year life span provided that nothing breaks.  I had my last computer so long that the heat sink literally fell off chip.  I replaced that computer with a refurbished computer that someone had custom made which was faster than the new store models that were out.  I got a really good deal because it was refurbished.

If you buy a computer too cheap then you may find yourself buying another within a couple of years. Whatever you do make sure the processor is fairly up to date and not a 32 bit.