Powerlifting is a strength sport that consists of three attempts at maximal weight on three lifts: squat, bench press, and deadlift. As in the sport of Olympic weightlifting, it involves lifting weights in three attempts.
That was a copy and paste quote of what powerlifting is see where it says 3 exercises squat,bench press,deadlift. Now if you're serious in the gym and trying to bulk and put on mass these are the 3 staple exercises you should be doing. Should you be doing them like a powerlifter I say no but still lifting these 3 exercises will put that mass you want on your body of course with the right diet.
So you don't have to lift a massive amount of weight to get the benefits from the sport of powerlifting. You should be adding there 3 main exercises into your routine though if you want to grow just lift at your pace don't try to lift like the hulk and eat a proper diet.