Do you plan to overclock? If so, you'll be hard-pressed to find a good online review. If not,
this article directly compares the 630 and the 3200+ at stock speeds in a variety of benchmark tests.
For the most part, the 3200+ runs away with the performance crown. However, there are a few benchmarks that I like to look at a little more closely...
WinRAR: The 3200+ out-performs the 630 by more than 30% in this test. I use WinRAR a lot, and so AMD's superiority here means quite a bit to me.
multitasking: The 3200+ has a 2.2% benchmark advantage, here, which is pretty much negligible.
video editing: This is a tough call. In one test, the 3200+ blows away the 630 by more than 30%. However, in every other test, the 630 enjoys a 2-16% advantage. I'd say the 630 has the video editing advantage, here.
audio editing: I also do a lot of audio editing, so I always love to look at this test. Unfortunately, the two CPUs are neck-and-neck, again, with the 3200+ beating the 630 by a mere 1%.
Of course, you can look at the benchmarks, yourself, to see which tests are most important to you.
If you're overclocking, you'll have to do more guesswork than scientific comparison. The "Venice" 3200+ has a lot of headroom, whereas the 6xx series has had a difficult time reaching high clock speeds. My guess is that if you plan to overclock, you'll be much better off with AMD, even for video editing.