The resolution of 15.6 inch should have been upgraded to 1600×900 or even higher. It is estimated that the industry will upgrade the resolution of 15.6 inches. Now some products have appeared.
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The high resolution of 1920× 1080 is equivalent to a 22-23 inch liquid crystal. The overall configuration is high, giving away 2G memory, mouse and special package.
You install a free 2G memory, and then install a Windows 7 flagship x64 system, which runs quite smoothly.
If this is not suitable, then buy 13 inch 1366×768, or 1280×800, after all, the practical height is large.
If you want an external monitor, how to make a large size like 18.5 inch-1366× 768, 19 inch-1440× 900, 20 inch-1600× 900 light and portable?