Comparing GPU and CPU benchmarks, the 630$ is more balanced but the 650$ seems to have a significantly better CPU at the cost of the GPU. I am NOT a hardcore gamer, and only play games such as League of Legends, Minecraft, etc, but may be playing other kinds of games in the future.
Overall, I am looking into a computer that will last me a couple years plus or minus a few upgrades if need be. Thus, I was considering the 650$ (since GPUs seem more easily replaceable? Not sure) but would like some opinions. I'm unsure if the imbalance in CPU/GPU in the 650$ will give me problems. Aside from gaming, I don't think I do anything too extreme with my computer (I'm pretty studious, so the worse I can think of is a million Office programs, PDFs, Chrome, Skype, and my media player running simultaneously).
The 630 one has an AMD Octa core processor where the intel one has only has quad core. Both have similar clock speeds, the amd would b slightly better for multi taking. The gpus wont make much of a difference for an entry level gamer but the 630 has a better one overall which means longer before needing replacement. I would recommend the 630 amd. It also has double the ram which means no need to upgrade that any time soon.