Meanwhile, the 14-inch R840 and 15.6-inch R850 are also getting Sandy Bridge CPUs, USB 3.0 ports, chiclet keyboards and all-around trimmer silhouettes. These laptops are now made with fiberglass-reinforced casing and the same Honeycomb rib structure that made last year's R700 sturdy enough to grab one-handed. Of the two, the R840's slim-down is more dramatic: it's 25 percent thinner than the last-generation Tecra M11, as you can see in the comparison shots past the break. That's largely thanks to Intel's Airflow Cooling technology, which rearranges all of the heat-generating components in a row and draws in cool air from outside the notebook, instead of within. And Tosh claims the battery can last up to ten hours on a charge (11 with an SSD) -- a vast improvement over the five and a half to six hours it promised the last time around. Moving up in size to the R850 will get you a number pad, but not that cooling technology. But it is about an inch thick at its thinnest, a point the PC maker is pleased as punch about. The R830, R840, and R850 start at $1,049, $899, and $879, respectively, and are available now on Toshiba's site, with the consumer-friendly R835 on sale at Best Buy and through the Microsoft Store.