Leaving my own personal feelings about these walmart pc's aside (cough, they suck, cough cough, NEVER buy a pc from a store that ends in "mart", cough cough)
I have seen various reviews of these systems and I've yet to see a good review of them. Quite frankly they make a nice cheap pc for a home office, but that's about it. They aren't good for gaming or home theatre ect. In other words they would be good for just about any application BUT mame. Also the processors that are in them are indeed crap. As a matter of fact you get whatever processor was cheapest at the time.... I think some batches have one generic processor and others have a different one.