However, he wasn't happy with the 10-try win.
"If we play like that against Leicester we will get murdered," he said.
"We know what's coming, he said of Saturday's away game."
While Northampton scored six tries, they had allowed four to London Irish and that was Boyd's concern.
"Defensively, we have to be much better and much more ruthless. Guys were dropping off tackles who don't normally, so there will be some disappointed individuals," he said.
"It's nice to get five points at home, and nice to have an eight-day turnaround, then we get a week off after that, so we can put all our eggs in one basket," he said.
Pat Lam's Bristol maintained their handy lead in the Premiership when extending their unbeaten to a club-record eight when beating Newcastle 34-17.
They are one win away from ensuring a home semifinal and have their chance to lock that in when playing defending champions Exeter on Friday.
Lam said after the game that he was pleased for the run of success, especially as they had never named the same 23 for games.
"It shows there is good competition, and that competition is key. Players like Chris Vui – coachable, skilful and understanding the system – are thriving because they know the patterns we want, and that is what you saw today, even from deep, sticking together. That's the Bears way," he said.
A home semifinal would be a reward for fans who had been with the side the whole way.
"We know we're at the top, but we're not finished yet. If we don't keep working we'll get overtaken. That is our mindset so we've set goals and targets – then it's game to game and minute to minute," he said.
"We're five bonus-point wins in a row from that work, but now we've got the big challenge of Exeter. We beat then well down there, but they won today and they're the one looking to take the jump on us, so it will be a great clash," Lam said.