Worldwide laptop PC sales surged in June. Shipments from the world's two largest contract laptop manufacturers bounced back from quiet April and early May.

The lull in laptop PC sales has been attributed by experts to systems makers waiting for the launch of Intel's Santa Rosa laptop PC chips. The Santa Rosa chipsets represent an upgrade on Intel's popular Centrino package.

Quanta said it shipped 2.8 million laptops in June, up sharply from 2.4 million in May and 2.2 million in April.
Quanta is the world's the biggest contract notebook maker. Taiwanese rival Compal Electronics shipped 1.77 million laptops in June, its third-highest figure ever for a single month, and up from 1.65 million in May and 1.70 million in April.

Such healthy laptop shipment figures show the laptop PC market has surged again after systems makers and users awaited the Intel chips. Market researchers had expected users to upgrade to new laptop PCs after the launch of Santa Rosa, when they could pick up the latest laptop PC hardware along with the Windows Vista OS.

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Intel launched its fourth generation Centrino wireless chip package on May 9, abandoning the Santa Rosa code name in favour of its marketing names, Centrino Duo and Centrino Pro.

The package of chips increases wireless internet and processing speeds in notebook PCs when compared to the previous Intel Centrino package.

The Duo and Pro versions both come with Intel dual-core microprocessors, but the Centrino Pro is targeted at laptops for business users. It carries Intel vPro software, which helps corporate IT departments manage fleets of laptop PCs.

At the time, Intel said it expected over 230 new laptop and desktop PCs to be built around the new chip package this year.

Quanta and Compal, which make notebook PCs and other products for customers such as Hewlett-Packard Co., Dell Inc. and Acer Inc., also reported higher revenue for the month. Quanta's June revenue rose 69 percent year-over-year to NT$65.42bn (£1bn), while Compal's increased 61 percent to NT$36.28 billion.