Worldwide shipments of personal computers grew at a better than expected pace in the second quarter, with shipments up about 12 percent compared to the same period last year, due to growing demand in Asia and unexpected strength in the US, according to market researcher IDC.

HP consolidated its position as the world's largest PC vendor with unit shipment growth of 36.5 percent, while Dell lost ground, with shipments slipping almost 5 percent despite recent efforts to revamp its lineup. Acer recorded the biggest increase in shipments among the five top vendors, selling 54.2 percent more PCs than last year. Nevertheless, the increase failed to keep it in third place, as Lenovo reclaimed the No. 3 spot lost to Acer last quarter, achieving an 8 percent market share. Still, Acer could soon begin to climb the rankings, if its success continues.

In the US, the market is lead by Dell with 28.4 percent market share by shipments, followed by HP with 23.6 percent, while Apple tied Gateway with 5.6 percent of the market, after a 26 rise in shipments for the Cupertino-based company.