I have a similar build. I have to say I love my 8350. It puts a 3570k to shame in everything except for gaming, in which they are about the same. As an engineering student I've found that an 8350 loves to do complex math, and loves to multitask. To answer your question: yes it bottlenecks a 7850. I would know because I have a 7850 in my rig. I don't game often though so that's not really an issue for me. a 7870 is more suited for that processor; you could also buy another 7850 and crossfire because they're so cheap right now and that would give you awesome gameplay. DO INVEST IN AN AFTERMARKET CPU COOLER. The stock cooler is okay until you put the cpu under load, then it gets hot. I have a coolermaster hyper 212 on mine and it keeps it plenty chilly. They can be a pain to get on if you're not experienced, but I actually have more trouble getting heatsinks on intel cpus.