They are one and the same model simply with a different backplate/mounting - the one you have has a backplate for a socket 2011 motherboard which uses M4 screws and probably won't work well on a socket 1155 motherboard
You will want to take it back and exchange it for the D14 with the 1155 (might say 1156) mounting bracket/backplate
OK thanks for the quick replies.
I contacted the store and they used the 1155 backplate.For some reason they had a 1155 backplate in the store and the noctua d14 lga2011.
The temps on idle @3.6-3.8 ghz with fans on level 5 running at ~900 rpm are around 31º.With prime95 i never get past 65º.
Running on a phantom 410 with only 1 intake fan and 2 exhaust.Getting the rest of my fans( +3 140mm and +2 120mm) this week and then i'll have 6 fans intake and 4 exhaust.
Tested 4.5ghz for 30min with offset +0.050v and temps hit 71º max.Could have gotten better if I had more air moving in.