For our temperature testing, we measure the peak GPU core temperature under load. A reading under load comes from running Metro Exodus Enhanced Edition for 30 minutes.
Thermal performance is a solid improvement over the Founders Edition. These figures show out of the box performance, using the default fan curve, but we can immediately see a 5C reduction to both the GPU and hot spot temperatures, with the X3 OC operating at 65C and 72.9C, respectively.