What stars suface temperature is closet to the temperature at the boundary between earths mantle and core?

The surface temperature of a star that is closest to the boundary between Earth's mantle and core is around 5,300°C to 5,800°C. Stars like our Sun, with surface temperatures around 5,500°C, fall within this range. The Earth's mantle-core boundary temperature is estimated to be around 5,700°C.