Ultrabooks might be the belle of the ball at this year's CES, but that doesn't mean you won't see a few desktops thrown in for variety's sake. Lenovo just unveiled a quartet of stationary machines, including two towers and a pair of touchscreen all-in-ones. Beginning with those touchscreens, the IdeaCentre B340 and B540 are essentially the same system, except the former has a 21.5-inch screen and the latter expands to 23. Both have 1080p displays and can be configured with up to 8GB of RAM and 2TB of storage, an optional Blu-ray drive and 3D tech. The only variation in specs, so far as we can tell, is that the 21.5-inch version maxes out with a 1GB NVIDIA GeForce 615M card, whereas for the 2... »read more

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