Just ran it and while I didn't shut everything down I'm getting 400/800. But like everything else on this machine I am noticing no impact to my workflow compared to my old rMBP.
Maybe my rMBP was way too overpowered for what I do, maybe this one is just right. But I stopped worrying about benchmarks and scores and things like that.
Maybe I'm just justifying my purchase, or maybe it's truly the right machine for me. At the end of the day this machine does everything I need it to and does it well.