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ATI powers Acer Aspire 1800 with the MOBILITY™ RADEON® X600, the first mobile graphics chip built for the new PCI Express™ notebook computers.
The Acer Aspire 1800 series notebooks feature ATI’s MOBILITY™ RADEON® X600 graphics. Acer is among the earliest adopters of ATI Technologies' MOBILITY™ RADEON® X600, the first mobile graphics chip built for new PCI Express™ notebook computers. The MOBILITY™ RADEON® X600 brings a new level of graphics performance, digital realism & power management to the mobile user – whether at home or at work.....

http://www.ati.com/buy/promotions/acermrx600/index.html