The main machine is beefier, with a better NVidia graphics chipset.

主机是beefier，带有较好的NVIDIA图形芯片。

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Apple has quietly signaled a new emphasis on graphics by hiring an influential graphics chipset designer from AMD.

苹果公司从AMD雇佣了一个很有影响力的显卡芯片设计师，这标志着苹果公司将会将工作重点移向图形处理。

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There is a caveat to this: If you are installing on a machine with an NVidia graphics chipset, be prepared to be disappointed.

这里也要告诫：如果你在有NVidia显卡芯片的电脑上安装ubuntu，你不得不失望了。

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The latter downsizes to a 14.1-inch display, keeps the AMD CPU and ATI graphics chipset, plus 3GB of RAM, a 250GB hard drive, and the aforementioned wireless and HDMI support.

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There's a VIA VN896 chipset for integrated graphics, WiFi and gigabit Ethernet, but it's only certified for Vista Basic, so don't plan on squeezing much Aero action out of this unit.

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Speculation about the cause has focused on the power-hungry LED-backlit Retina display, the new A5X processor with its quad core graphics, the 4G LTE chipset present in some of the flavors offered and the new, larger battery pack.

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