Umm I don't know if you mind me asking, but why do you care? Why does everyone bandwagon on hating Synapse? It's not that bad, you register for it, set up your mouse, and then you don't have to mess with it again... I can turn it off, uninstall, and my DA 2013 still works with the settings I've set.
If that's not the issue, and you just care about that native dpi, I don't even think it makes a difference, because the tracking pretty much feels the same throughout.
Anyways, to answer your question, the native is 1800 (On initial plug in) but 500hz unless changed in drivers.
All the settings on the DA 2013 are good, so you can use whatever and don't have to bother yourself with scaling back your dpi.
Edited by Nilizum - Today at 11:42 am
Source:
http://www.overclock.net/t/1397590/deathadder-native-dpi