Ireland have moved from eighth to sixth in the IRB world rankings, following their 40-9 Test victory over Samoa at Aviva Stadium on Saturday.

Joe Schmidt's team dismantled Samoa with a five-try performance against the Pacific Islanders, who were ranked seventh, and slip to eighth in the rankings as a result of their defeat in Dublin.

The margin of Ireland's win also moved them above Wales by five hundredths of a rating point after the Welsh fell to a 24-15 defeat against South Africa at the Millennium Stadium.

The Welsh defeat to South Africa means they have now gone 17 Tests without beating either the Springboks, Wallabies or All Blacks.

The win means South Africa narrow the deficit slightly to New Zealand, with the All Blacks due to celebrate four years atop the IRB world rankings on 16 November.  

France’s 26-19 defeat by New Zealand has not proven too costly for Les Bleus, who maintain their spot but with a lower rating point total. The All Blacks are again unchallenged at top spot with a slightly improved rating.

Australia remain fourth after the 50-20 win over Italy but improve their total by half a point thanks to the try-fest in Turin.

England and Argentina began the weekend third and 10th respectively in the world and are unchanged despite the home side’s 31-12 victory at Twickenham.

Scotland stay ninth after their 42-17 win over Japan, but with an improved points rating, and the vanquished Brave Blossoms rise one place to 14th as a result of Canada's 19-15 loss to Georgia in Tbilisi.

Portugal hosted Fiji in Lisbon but endured a try count of six to one as the visitors ran up a 36-13 result to climb one place to 12th with the Portuguese remaining 22nd.

IRB world rankings

1 New Zealand - 93.20
2 South Africa - 88.51
3 England - 86.31
4 Australia - 84.22
5 France - 81.44
6 IRELAND - 80.76
7 Wales - 80.71
8 Samoa - 79.24
9 Scotland - 77.25
10 Argentina - 75.50
11 Italy - 73.65
12 Fiji - 73.56
13 Tonga - 73.21
14 Japan - 71.68
15 Canada - 71.47
16 Georgia - 68.86
17 Romania - 67.74
18 USA - 64.91
19 Russia - 61.99
20 Spain - 61.85