For our temperature testing, we measure the peak GPU core temperature under load. A reading under load comes from running Cyberpunk 2077 for 30 minutes.
Out of the box thermal performance may surprise you, as there's really not much between these two cards. The Pulse hit a peak of 72C on the GPU and 90C on the hot spot, compared with 71C and 91C for the AMD reference card, respectively. This is with the default fan curve however, so noise levels aren't taken into account.