Generally, this disclosure provides devices, systems and methods for improved transmit power adaptation for platforms with wireless communication capability. A device may include a memory to store a first transmission (Tx) power level and a Tx power determination module to receive a second Tx power level from a device driver, the second Tx power level provided from a Basic Input/Output System (BIOS) associated with a platform hosting the device. The Tx power determination module may further determine a third Tx power level based on a comparison of the first Tx power level and the second Tx power level. The device may further include a radio frequency (RF) transmission module to transmit a wireless signal at the third Tx power level.