The Official Online RBS 6 Nations Store is open. The store has everything you need to get behind your team during the RBS 6 Nations, plus the store is now fully stocked with a much wider range of rugby merchandise.
Scotland have never failed to reach the quarter-finals of the World Cup but Argentina have the edge in recent years, having won eight of the 12 matches since 1990, including at the last-eight stage four years ago in France.
Last year Scotland did chalk up two victories in Argentina however, but Townsend believes the Pumas will provide a far harder test in the New Zealand capital.
"This will be a much tougher challenge than we faced in Argentina," said Townsend, who won 82 caps for Scotland.
"Argentina have a lot of big game players with a lot of experience.
"We have got to match their physicality, we've got to have a very strong set-piece. They have a huge scrum, a huge line-out presence, especially in the drive.
"A lot of these players were involved in Argentina a year ago and know what's required to win.
"But I believe the team we've got is more than capable of delivering the huge performance that we'll need.
"The loser is going to find it tough to get into the next stage of the tournament.”