In this paper experimental researches of one-step overclocking algorithms were presented. Typically, software for inertial measurement unit implemented without complex computational algorithms. That is the reason for the appearance of large output algorithmic errors. Besides, there are errors and also others influences on the work of inexpensive inertial measurement unit, due to noise and instrumental features from each sensor. As a result, directly the same errors have affection on the accuracy of orientation and navigation strapdown inertial navigation system. The results by the static position in space were obtained. The quality and accuracy of the uncomplicated one-step overclocking algorithms has been investigated.