Intel: +1.6% from Q2/09, +3.3% from Q3/08
nVidia: -4.3% from Q2/09, -2.9% from Q3/08
AMD: +1.4% from Q2/09, -0.8% from Q3/08
Both AMD and NVIDIA have lost market share to Intel compared to this time last year. However, it's the growth in shipments that's probably more important :-
Compared to the previous quarter, Intel enjoyed 25.2% growth in shipments, AMD saw 30.2%, and Nvidia just 3.3%
Intel's figures will be down to a boost in cheap laptop sales around the world, as well as PC vendors pushing new machines ready for launch with Windows 7; AMD have new products on the table, whereas NVIDIA's growth could simply be construed as just "raw growth", i.e. not tied to any particular event. Either way, it's relatively good news for everyone concerned.