The shipments will probably get a boost though when Windows 8 is launched, which could spur PC upgrades, Loverde said. Microsoft has not officially announced a release date for Windows 8, but IDC said that PCs with Windows 8 will probably become available in the fourth quarter.
PC shipments have been hurt as people gravitate toward tablets and smartphones. But Intel, whose chips go into a majority of PCs, is trying to strike back with ultrabooks, a new category of thin and light PCs with tablet-like features. The chip maker is hoping that ultrabooks will draw buyers back to PCs.
But consumers have been slow to adopt ultrabooks, mainly due to high prices, Chou said. Ultrabooks today are priced at more than US$800.
"We haven't seen too many ultrabooks shipments," Chou said, adding that lower prices and Windows 8 could help the category.
Intel has said ultrabook prices may fall to $699 by the end of the year, and Chou said that's a good enough price for ultrabooks to go head-to-head with Apple's MacBook Air.
"You have to be cheaper than Apple," Chou said.
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