I am highly skeptical of this 55 degree Celsius claim. At 461W, you can guarantee that there's a lot of heat output, and based on current RTX 3090 Ti reviews, you can get a sense of how hot it can potentially get. To get to 55, you need nothing short of a high end custom water cooling setup for the RTX 3090 Ti. The only thing I can think of is that the peak power draw is 461W, but consistently, it was drawing a lot less power due to various reasons. If it was running this cool, Nvidia and their AIB will never need to couple the card with such a massive air cooler to begin with.