No idea about power usage, but there are rumors about a $180 GTX 1650 for late March and a price cut for the 1050 Ti.It is off topic but was wondering will Nvdia follow up a Gtx 1050Ti successor with same 75w power usage ?
https://www.hardocp.com/news/2019/01/23/nvidia_1660_ti_will_launch_on_february_15_at_279/
Though, this rumor was wrong about the February 15th date for the 1660 Ti (it's apparently coming out on the 22nd instead).
RX 590 is something like 10% better than the RX 580, performance wise I can see the non-TI GTX 1660 being competitive with the RX 590, while the 1660 Ti is likely to be considerably better (likely to be GTX 980 Ti/GTX 1070 tier).Not if they price it too high as everything below high end for nvidia.
If priced the same RX590 beating commence, power effeciency isn't That important, it's not 20$ worth for people.
But nvidia sells anyways