I have an Acer Aspire 5750.
I5 Core with 2.3HGz boosted up to 2.9HGz and 8GB of RAM.
So I shouldn't have a problem with playing many games...... apart from the fact it has an Intel HD Graphics 3000 card which makes games difficult.
How can I get a better one?
What can I do?
Laptop GPUs are quite often soldered to the board. And where they are not, they are usually specific to the manufacturer, make and model, meaning you would likely only be able to replace it with an identical unit.