Prices of Windows RT devices have started falling, signaling an attempt by PC makers to quickly clear out stock after poor adoption of tablets and convertibles with the operating system.

Microsoft released Windows RT for ARM-based devices and Windows 8 for Intel-based devices in October last year. The price drop is an acknowledgement that Windows RT has failed, analysts said.

Prices of popular products usually don't fall, but Windows RT devices were not in demand, and prices fell, analysts said.

The starting price for Dell's XPS 10 is now US$449 for a 32GB model, scalping $50 off the original launch price. The 64GB model is $499, which is a drop from the original $599 price. By comparison, the price of the Latitude 10 tablet with Intel processors and Microsoft's Windows 8 OS remained stable at $499.

Asus' VivoTab RT, which is largely sold through retailers, is being offered by for $382 with 32GB of storage, which is a heavy discount from the $599 launch price. Retailers like Best Buy, Staples and Office Depot have also dropped the price of the tablet by $50, now selling it for $549.