"Of the 81.3m units sold, Nvidia took 43 per cent of the desktop market and Intel claimed 38.5 per cent. The real gap came between the quarter’s two leaders and third position AMD though, which JPR recognised with the significantly lower market share of 23 per cent."

43% + 38.5% + 23% = 104.5%

43% + 38.5% + 23% = 104.5%

Perhaps there are Systems that have Intel on-board chips *and* have added Nvidia cards?

I'm guessing they are counting ATI as AMD now.