Usage: I mainly use this machine for gaming, and it does pretty well. Of course the GPU leaves more to the imagination, but that's the beauty of it. You'll have the money later to replace it with something more powerful if you feel the need.
What worked well: It is absolutely mouse quiet, and runs at great temps. Rarely exceeds 70 degrees Celcius under the heaviest loads.
Problems: None per say. As I said before, don't expect to run AAA titles at max settings with the GPU in this build, but it will definitely not disappoint.