That low-end PSU will be fine for the GTX 1050 Ti. I had one years ago. Finally died from over loading it. Connect it up and enjoy vastly improved gaming over the integrated GPU if that's what you were using before. The aging Pentium dual core may be a bit of a bottleneck in some games at some times, but not a deal breaker IMO.
Thank you. I'm using Asus GT 730. I know the Pentium G630 CPU is weak compared to GTX 1050Ti. I will upgrade VGA first, then CPU.