Microsoft launched its Surface Pro tablet today, the first full-fledged Windows 8 machine developed by the company, and already the demand is exceeding the supply for the 128 GB version of the tablet. Online listings at the Microsoft Store and Staples show the Surface Pro 128 GB as out of stock.

Whether the situation is more a result of low supply or high demand isn’t clear. However, it is abundantly clear that the 128 GB version of the Surface Pro is in much higher demand than its 64 GB sibling.

That makes sense, given that the Intel-based Surface Pro is an actual Windows 8 PC, unlike the ARM-based Surface RT, which doesn’t run legacy applications. Users will be able to treat the Surface Pro more like an all-purpose PC, which tends to translate into a need for more storage.

See Ed Bott’s breakdown of usable storage space in the Surface Pro vs. MacBook Air.

In the Seattle region, both the Bellevue Square and University Village Microsoft Stores still have both versions of the Surface Pro in stock, based on our calls a short time ago.

Previously: Hands-on with Surface Pro, Microsoft’s three-in-one PC

Follow-up: Check out this line for Microsoft’s Surface Pro

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