Strip out the old E-350 Zacate APU from MSI's thin-and-light X370, replace it with a brand new 1.65GHz E-450 Llano engine with around 20 percent higher CPU and graphics benchmarks, and what do you get? The X370-205US, that's what, or equally the 206US white variant. The 13-incher just popped up at Amazon and Newegg with exactly the same $579 price tag as its vanquished predecessor, the same 1366x768 resolution, 4GB RAM, 500GB HDD, up to ten hours' stamina and an easy-going 3.11 pound weight that will only hurt your chiropractor.