The games will also be vital for Ireland as they will be aiming to improve on their current IRB world ranking ahead of the draw in December for the 2015 Rugby World Cup pool allocation.
There is a wide range of ticket options and prices available for both games, offering exceptional value to rugby supporters to see the very best of international rugby this November.
Adult tickets start at between €30 and €20 for the games. There are also special parent and child packages available at €60 for South Africa and €45 for Argentina for two tickets in designated areas, offering a 50% discount for children.
In addition, tickets for the Ireland XV v Fiji game are available with prices starting as low as €7 for a junior ticket, €15 for a terrace ticket and stand tickets for between €20 and €30. Tickets are available at both www.munsterrugby.ie and www.ticketmaster.ie.
Speaking at the announcement today, Brian O'Driscoll was certainly excited about the GUINNESS Series, saying that the games at the Aviva Stadium and the match against Fiji offer up different challenges.
"You only have to look at the performances Argentina and South Africa have turned in over the last couple of weeks to see what big games these are going to be for us in November," he said.
"South Africa will always have big men as well as pace and power, but when you see how well they created opportunities against New Zealand in their last outing in a game that they and a lot of others would feel they should have won, you can see that they will be bringing a lot more to the table.
"Tradition in rugby always plays a big part in how international teams play, so the visit of Fiji to Limerick will certainly see our ability to run with the ball and to defend a wide game tested.
"Every time I have played at Thomond Park for Ireland, the crowd have come out in strength and given us magnificent support, so I know that they will be in for a treat of running rugby when we play Fiji.
"Argentina has been fairly impressive, probably deserving one if not two victories in the Rugby Championship, and they have gotten better and better as the tournament has gone on.
"Their physicality in contact was the big stand out and you can see how important it has been for them, but they've also continued to develop their attacking threats across the park.
"You could see it when they took South Africa on at their own game and deserved a victory at home and shook New Zealand and Australia away from home.
"Playing in the Ireland jersey at home for your country is always something very special and it still hasn't become any less of a buzz. The Aviva has had some great occasions for us and judging by how South Africa and Argentina are shaping up, this November should see some great matches."