a good gaming pc made by computer manifacturers  

Nowadays there are lots of Gaming Computer in the market struggling to survive in the selves of computer shop., but if your really looking for the best All purpose Gaming Computer setup you must prefer the Branded Computer against multiple Brand of hardware to built a machine.

if you'll gonna ask why Branded if its much higher price compare to low brand out there. first of all the stability of the system running at its peak and heat climate issue of overheating.

but if your short in budget well all you have to do is proceed to a local Computer shop to assist you in building your own specification Hardware parts and even though its just an assemble but also consider the brands of parts that you think is the common brand running in the market with good feedback from its user.

when your about to start choosing your parts consider its the purpose of its use. in your case is for Gaming right?!
you need an intense Graphic Card more or less 512MB of GDDR3., the second important thing is its Brain of that is the Intel Quad Core ranging of 2.0Ghz++ and the third one is Memory which serves as a highway of its communication and computation, average user is already using 1GB of Memory but if your really want a smooth operation you have to pick the 4GB of memory for the Maximum Gaming Experience.

Just stick to those important specification and you'll be experiencing the most intense gaming Experience.

Alienware, CyberpowerPC,

Alienware probably being my personal choice, you can customize whatever you want to go into the computer.