I know everyone likes to show the latest benchmarks with high end gear but all my high end gear is mining ATM. Nice to see the Fury / 380 is doing but well but pretty surprised how poorly it runs on the 780/290 era cards. There's no good reason a 960 or 380 should be outperforming these faster cards. I'm sure AMD will fix the performance like they normally do, but not sure about Nvidia though, hopefully they address the 680/780 series cards.
So for the low end stuff;
So far I've only played the game on an i7 Alpha (750 ti) and a Radeon 7850 APU. The game plays/looks great at 1600P/1080P on a 750 Ti with a mix of medium and high settings.
I played through the first three levels and had no issues. It runs approx. 40-60 FPS and looks amazing.
What really surprised is me is replaying the same 3 levels on my 7850K APU from my couch and it actually runs really well albeit at low settings and lower resolutions. So yes you can play this game on an a 7850K APU if you realistically turn down the settings. At 720P / Low settings the game still looks pretty decent at least from 10 feet away on a large screen TV. The game runs roughly 35-60 FPS. In heavier firefights the CPU/GPU actually keeps up where you don't feel like if you die it's because of low FPS.
Just thought I would add my observations here for anyone who has more modest gear
Oh, and anyone on the fence please buy this game, it's excellent! easily my game of the year so far.