Many of the reviewers have described the performance up to ISO 3200 as the best in APS-C though it reportedly takes a dip at ISO 6400 and above.
It is an open question about what files - RAW or JPEG - reviewers used. See an example above, it is made from ISO3200 samples.
[quote author=Bilbo link=topic=3521.msg6303#msg6303 date=1424372403]
I bet on that it won't surpass D7100. Side-to-side comparison shows that NX1 has slightly noisier images.
Also, D7100 is still able to pull out more details, however it does it. Decide which sample is more readable: https://imgur.com/a/6g9yW
Looking at the resolution scale it is pretty easy to see NX1 is resolving more detail than the D7100:
And is a lot cleaner at ISO3200
Note, for resolution I did full output, for noise I did "print" because this is for same output size (only valid way to compare noise).
Your examples look convincing. However, I still bet on that D7100 has negligibly better DR at ISO3200, I think that those just a tad bit bigger colour blotches contribute to the RMS noise more, not that it is a notable diffference. ISO25600 RAWs make me think that my bet is right.
Except that they are clearly on par, I cannot see neither NX1 nor D7100 to be a winner. However, this clearly is a huge step up for Samsung.