I own both ARM based Samsung Chromebook and the newer Haswell Chromebook. Based on my experience, ARM Chromebooks are now dead on arrival thanks to Haswell. Haswell powered chromebooks are offering better battery life, superior performance and same price point ($249). My Samsung Chromebook struggles while playing 1080p youtube videos, Netflix HD videos and amazon prime videos. If you have more than 4 tabs open, things get excruciatingly slow. Contrast this with Acer Haswell Chromebook, its super fast, even with a dozen tabs open. I have thrown everything at it including 1080p youtube videos, CPU intensive flash based games (for e.g. cricket), it never struggled. Haswell and very soon Baytrail powered Chromebooks make ARM chips DOA as far as chromebooks are concerned.