Is This PC Configuration Good?

It's good, and in fact it may be a bit overpowered (do you really need a 3,2 GHz quad core? Will you fully utilize it, or will it idle most of the time?). However, if you're aiming the build for gaming, consider a more powerful graphics card. The 5670 is last-gen material, and it's from the "mainstream" segment. Consider a 5770 or perhaps a 6750.