Gregor Townsend believes Scotland will need to produce one of their 'best-ever' performances in the World Cup decider against Ireland next weekend. 

Scotland set up the Pool B showdown against the Irish after a magnificent 84-0 win over Romania tonight in Lille. Darcy Graham closed in on Stuart Hogg's try record with four as Scotland racked up 12 tries and Ben Healy produced a faultless kicking display with a 100 per cent conversion record. 

Ireland will be favourites to reach the quarter-finals but Townsend believes his side can cause an upset if they play at their best. 

He told ITV: "We knew we had to win this game to still be in the World Cup, and a bonus point means we know what we need to do next week.

READ MORE: Scotland 84 Romania 0 - Ireland showdown awaits as Graham hunts Hogg

"Full credit to the players, their attitude all week has been excellent and they did a professional job. It was hard work, physical, and the ground was wet, but some of the individuals tries, and more importantly, the teamwork, was excellent.

"There was a togetherness in the squad. The players realised they had to produce a quick ball, and Romania would come out and take the game to us. They were very physical at times.

"We just stuck to our task, whether there were players off with yellow cards, whether we'd just scored, or whether we'd gone through a fallow period. That focus was really good to see."

"We've got to produce probably our best performance of the year, one of our best-ever performances. That's the whole goal of why we working in training, what we've learned this year. We have to bring that out for 80 minutes.

"It'll be a cracking game, Stade de France full of Scotland and Ireland fans."