it depends on what games you want to play, newer games, such as monster hunter world will be unplayable but most older games (2016 and older) eg rise of the tomb raider will be no problem, neither will any esports games, eg cs:go and fortnite
edit: make sure either your old case has room for a 1050ti or your motherboard has standard front headers (the pins that connect the case power button to the motherboard),