Ultra-slim ultrabooks such as ASUS's Zenbook and Acer's Aspire S3 are hitting the market, but there are still other options if you're looking for a lightweight notebook. In fact, while these more traditional notebooks might be a bit bigger than an ultrabook, they have one advantage: performance. That's if they use standard versions of Intel's second-generation Core i-series processors, whereas ultrabooks use low-voltage versions – which are more power efficient, but slower. Here we review two sub-2kg, 14in notebooks that pack plenty of punch.





