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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.
Temperature testing is where we can see more of a difference between the four cards tested. First of all, Nvidia's decision to use the RTX 3080 cooler for the RTX 3080 Ti is not problematic at all, as the GPU hot spot did not exceed 80C in our testing. The Palit and Gigabyte cards are able to better this, with the Gaming OC's OC BIOS delivering the coolest results, with a hot spot temperature of 74C.
On the other hand, the Inno3D iChill X4 is more problematic, with a hot spot hitting 96C, while the GPU temperature hit 77C. That's a large delta between the two measurements, possibly indicative of less-than-ideal mounting pressure, though Inno3D did ask us before we began testing to not disassemble the card, so we can't verify this theory.
Update 20/07/21: Inno3D have been in touch and sent us a second iChill X4 to test – the thermal results of which are below.
This sample is definitely an improvement, with a much lower hot spot temperature, potentially indicating poor mounting pressure on our original card. It's still not the best performer in terms of temperatures, but it is better.
