no i havnt purchased anything
I also have no idea what your budget is, or why in particular you wanted to build into a Bitfenix prodigy. But this build isn't too far off what an APU system would cost you, and it will outperform it in every regard.
http://pcpartpicker.com/p/NtWr
around $400
http://pcpartpicker.com/p/NunT
you could probably build an APU rig that would play DOTA2, but that would only be because the source engine is very nice and easy to render things with. It would suffer mightily to push a lot of the newer games at any resolution higher than 720p. What I would recommend would be to stick with the AM3/AM3+ powered stuff. It is simply more robust.
http://pcpartpicker.com/p/NvXD
It still goes more than $100 over budget, and none of these parts are the best, but they are all available and very good quality. It is also stuffed into the case of choice, which is one of the primary contributing factors to the busted budget. The other being that to get an APU with considerable graphical prowess you must buy an A10, which starts at $126, and then you should always use dual graphics with a Radeon HD 6670, or you will be only able to play at 720p. And then to make it so that the APU is able to fill itself with data at a respectable rate, you really need to have at least DDR3 clocked at 1866MHz. From everywhere that I looked, people said that the Patriot Viper 3 IEM edition RAM worked just fine in AMD builds, especially those like the motherboard I recommended prior that actually supports XMP 1.3 (I think most of the AMD platforms do, but I couldn't find any verification for that on their website like I could for the 970A-G46.) The only problem some people would have is the fact that it has Intel branding on the front of the DIMMs, but I don't really think that is a real problem, since the case doesn't have side panel windows anyway, and I honestly don't care that much about a sticker, if I did, then I would just get some paint and paint over that part of the sticker, or I might even get creative and use an x-acto knife to remove the center part of the sticker and expose more of the beautiful anodized aluminum beneath. Anyway, cooler is not optional with that chip; graphics card is slightly overpriced, but has a very nice cooler, the other one from MSI happens to be cheaper and have more memory, but it also has a crappy cooler and it isn't available at the single retailer that claims to sell it. The power supply doesn't give you any real room to upgrade, but then again, neither would a 500W one. You could go up to a Radeon HD 7770 before things got difficult, but that would negate the whole purpose of the APU. The HDD is just a HDD. Nothing special, nothing particularly large either. But it works.