Currently the Surface Pro 2 sports a Intel i5-4200U chipset clocked at 1.6GHz. The new Surface Pro 2 models run an Intel i5-4300U chipset clocked at a speedier 1.9GHz, which also includes Intel’s Trusted Execution Technology that helps improve software security. This little upgrade was discovered when one Surface Pro 2 owner swapped his faulty unit for a new one and discovered the changes. According to a statement made by Microsoft, “Microsoft routinely makes small changes to internal components over the lifetime of a product, based on numerous factors including supply chain partnerships, availability, and value for our customers.”
It is unclear why Microsoft makes these changes as it does seem a tad unfair to early adopters who might feel a little bit cheated that they paid the same amount but for older hardware, but in any case if you have yet to get the Surface Pro 2 tablet, you might want to hold off until older stock gets depleted, or head on over to the store and check out its hardware first before buying.