The Baby Boks smashed a 100 in the IRB under 21 World Championships, but New Zealand and France remain their greatest threats.
The Boks, 20-16 winners against the Pumas, hammered Georgia 102-17.
The Kiwis, having beaten Italy 75-16, led England 29-0 before conceding two late tries for a 29-14 win. Australia beat Fiji 43-20 and hosts France were rampant in winning 32-3 against Wales.
Argentina clawed back a 17-12 deficit to beat Ireland 26-22 and condemn the Irish to their second successive defeat.
The IRB website reports that from Keegan Daniel’s first try after three minutes, the Boks never looked in danger and went on to score seven more in the first half – all converted by fly half Dollie – to Georgia’s solitary penalty.
The second half saw much of the same. Georgia’s Otari Minashvili did score but with South Africa’s backs treating the game much as a training drill for their impressive moves the score ticked along and centre Waylon Murray was one player to stand out with a hat trick.
With two victories from two, the defending champions are well placed going into their match against hosts France – also unbeaten – while Georgia now face Ireland.