I built a new desktop with a 7800x3d and a H100I Elite AIO cooler. Its idling at around 46C, is that high? I have tried also to apply new thermal paste (Noctua NT-H2), and got the same idle temp.
Im currently living in Spain and its like 30C in the room, but think i had the same temp when i built the computer in Norway this summer. I have a 7900XTX in case also, which probably is not helping with the temp. The case is a Corsait 4000D