A meeting with favourites New Zealand now looms for the Wales under-21 side after they defeated Argentina by 45-34 in the World Cup in South Africa.
Wales had the game wrapped up early on and though Argentina had a burst of scoring in the last minutes of the match the result was never in doubt.
Cardiff fly half Nick Robinson had another splendid day with a 25-point haul from a try, four conversions and four penalty goals.
The five tries scored took the Wales try-count to 17 in two matches with scrum half Michael Phillips (Llanelli), wing Lee Roberts (Cardiff), full back Gareth Swales (Swansea) and flanker Robin Sowden-Taylor (Cardiff) all joining Robinson in touching down for Wales.
Team:G Swales; L Roberts, M Jones, M Brayley (capt) (M Miles), M Nuthall (M Hook); N Robinson, M Phillips (C Miller); P James, A Matthews, A Jones,
Rhys Jones, L Tait, R Williams, R Sowden-Taylor, Ryan Jones (G Williams).
Tries: M Phillips, N Robinson, L Roberts, R Sowden-Taylor, G Swales. Cons: N Robinson (4). Pens: N Robinson (4).
Warren Gatland and Sam Warburton look ahead to this week's crunch RBS 6 Nations tie against France, where the Wales skipper in particular is keen to make his mark, as Paris has proved a bleak place for him in the past.
Following their historic win over England, Wales Under 20 suffered a narrow, 36-34 loss to their Scottish counterparts last weekend, despite outscoring them by five tries to three. Watch the match highlights and reaction.
WRU TV go behind the scenes with the Wales squad as they put the final touches in place ahead of the clash against Scotland at Murrayfield. Follow the squad on their captain's run, the kickers visit to Murrayfield and Neil Jenkins' press conference