Most likely it would work. The GT 1030 only has a 30 watt TDP, and assuming the rest of the system has mid-range to lower end parts, the other components might not ever draw much more than 100 watts from the PSU. Nvidia recommends having at least a 300 watt PSU, but they recommend the same for the 75 watt 1050 Ti, and are overestimating the requirement in case someone is pairing it with a bunch of other power-hungry components. What are the rest of the system's specs?