lightcloud :
Of course it will improve significantly over just having an integrated GPU.
Take a look at this to save money.
http://www.tomshardware.com/reviews/gaming-graphics-card-review,3107.html
thanks for replying. considering that the 8570D is part of the cpu itself, does it take a chunk of it's processing power? also 8570D is a more powerful gpu, will my pc play games better with the 5450 because it is a dedicated GPU?