Is this config good enough for some 1280x1024 entry level gaming?
For the record, this is not meant to playing demanding games. Actually, this is more intended for stuff like TF2, Minecraft (will slap on hd texturepacks and shaders), and other light games. I am totally satisfied with playing on medium, because I am coming from absolute low settings with forced 1024x768 with 10fps. The price point is meant to be competitive with normally priced prebuilts that cost about $600.
As long as you are not looking at the number of "cores" in the processor, and expecting it to be really fast, fine. It has significantly less performance, in most tasks, compared with, say, an Intel i3. Having said that, it has, at least, reasonable graphics, for light gaming, at your resolution. I'm not a great lover of mini cases, because they've often got little ventilation, and rubbish power supplies. I'm not familiar with it, but that one does, at least, seem reasonable. All round, it's a reasonable build, as long as you don't expect miracles, from it.