You think second GPU have locked voltage or maybe new version of ASUS GPU Tweak?
Voltage slider with at least 150mV would be good thing but ASUS probably drain almost everything, clock is very high.
Anyway people who want LN2 will make modification on PCB to unlock voltage.
I'm not sure and NVIDIA what think about voltage.
Even if that's not fair, ASUS pay graphic processor to them and now they have rights to use them as they want, if something happen they will cover warranty, not NVIDIA. But looks like NVIDIA think that something like that could influence of selling their new series and don't want to people drain more performance from cards.
For my opinion for every day gaming only is usefull fabric BIOS, Normal or LN2, no matter,
other modified versions are in most case only for benchmark tests.
Many people and want Matrix cards to modified PCB and test in deep minus...
I look on them only as gaming on 200+MHz over reference with locked voltage only unlocked voltage monitoring.
Even if voltage is unlocked I keep locked with AB. But definitely is better if customer have option to move slider if want. 50mV mean nothing.
150-200mV is something.