Here's why:

* Tau Ceti: This is a G-type star, similar to our Sun but slightly cooler. Its surface temperature is around 5,340 K (9,570°F).

* Procyon B: This is a white dwarf, a very dense and hot remnant of a star that has exhausted its nuclear fuel. Its surface temperature is estimated to be around 7,700 K (13,800°F).

Therefore, Procyon B, being a white dwarf, has a significantly higher temperature than Tau Ceti, a G-type star.