So you have two different systems both equal contained in a case with the same volume and area. Both cases are in two separate rooms of the same area and volume. Both rooms have the same temperature. One system has a cpu a tdp of 125w and one has a 67w tdp. 125W System has 10 times bigger copper heatsink and blows 3 times more volume of air than the system of 67w. The 125w system reads 55C max CPU core temperature and the 67w system reads 75C max CPU core temperature. Based on that information answer these questions.

1. Which room is has a higher peak temperature?

2. Which room's temperature rises faster?

3. Which case has a Higher temperature? If you think I left any details out, let me know.