Intel Ivy Bridge Benchmarked on ASUS Zenbook UX31A, Lenovo ThinkPad X230: Thinner and Faster Than Ever

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Intel just announced the second half of its new Ivy Bridge CPU lineup, processors that are smaller, more powerful, and more power efficient than ever before. This new set of CPUs is designed expressly for ultrabooks and other thin-and-light systems. We recently put a quad-core Ivy Bridge processor to the test (The ASUS N56V), and now, we had a chance to test their mobile and low-voltage processors with a white book from Intel, the ASUS Zenbook Prime UX31A, and the Lenovo ThinkPad X230.  How does Intel's new processor stack up, and how does it compare to ultraportables in general?

Our Intel whitebook features a 1.8-GHz Intel Core i5-3427U processor, 4GB of RAM, an Intel 240GB SSD, and an Intel HD Graphics 4000 GPU, and put it up against the following systems: