McCaw, who will play his 96th test, said there would be no chance of New Zealand letting up despite going in the match heavy favourites against a side featuring only four players that have played more than seven tests.
"You just can't - the attitude that this team has you never ever do that and I've never gone onto a rugby field holding anything back.
"You might try things that may be for down the track, but that's hopefully going to ensure you win on Saturday as well," he said after the captain's run at Westpac Stadium today.
With the Springboks short of 21 players left at home to recover from injuries, New Zealand bookmakers have listed the tourists, beaten 39-20 by Australia in Sydney a week ago, as 7-1 outsiders with the All Blacks expected to coast to a comfortable win.
"We've made sure the guys don't listen to that - that's other people talking we need to get our stuff sorted. At the end of the day we weren't that crash hot sevens days ago," said McCaw.
"The Springboks, even though perhaps they left some guys at home who would normally be in the team, there's still some pretty good rugby players there who'll be hurting after what happened in Sydney last week."
McCaw said the notion that a New Zealand team would take to the field not giving their all was a foreign concept to him.
"I don't think there would ever be an All Black team that accepts not going out and performing.
"Rather than going in just thinking whatever happens, happens, we're going out to win. If that ever changes then we've got serious problems," he said.
The test is an opportunity for some players to ensure they remain in the World Cup picture but McCaw stressed individuals had to make sure they did what was best for the team.
"We've spoken about it as a team, we can't control what the selectors do. All that you can control is what you do when you put the jersey on and what the team does.
"There's competition within the whole squad and everyone wants to make the most of their chance, to do that you've got to do your bit for the team.
"That's how you make sure the selectors put you in the team by doing your bit for the team.
"That's the attitude we've always had and rather than worrying about yourself you worry about what you've got to do in a team context," he said.
The All Blacks have made four personnel changes to the side that beat Fiji 60-14 in Dunedin last week, with Cory Jane, one of the players desperate to impress selectors, starting on the right wing.
Daniel Carter returns at first five-eighth, Sam Whitleock ousts Dunedin debutant Jarrad Hoeata in the second row, and Jerome Kaino is back on the side of the scrum.
But it is the positional rather than the personnel shifts that have raised eyebrows with flanker Adam Thomson handed his first test start in the No 8 jersey.
Coach Graham Henry justified the decision to play Thomson, who starred against Fiji on the blindside flank, as part of their planning for the World Cup.
Henry said with four loose forwards in a matchday 22, they needed flexibility to be able to cover all bases and that included slotting McCaw in at No 8 in certain situations something his captain was comfortable with.
"I think it'll be pretty straightforward to be honest," McCaw said.
The All Blacks reveal a new playing jersey tomorrow night and the game is expected to be played in cool, showery conditions.
