This news has come totally unannounced from Google and Samsung, but we're looking at the Chromebox Series 3 unit which features a Core i5 processor and is listed as 'in-stock' at multiple retailers.
The XE300M22-A01US sports a Sandy Bridge-based dual-core Core i5 processor clocked at 2.5GHz, 4GB of RAM and a 16GB SSD. It won't wipe the floor with a high-end PC, but these days a fast dual-core, 4GB of RAM and an SSD is all you need for a system to feel snappy.
Prices floating around right now suggest we're looking at around $405, which is a little more than the older model.
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