A prominent German video blogger, Der8auer, undertook a broad investigation into why AMD Radeon RX 7900 graphics cards run hot. An enthusiast purchased four graphics cards to compare how cooling behaved when the cards were mounted in different orientations. In the standard horizontal setup, the GPUs showed noticeably faster and stronger heating. Midway through the testing, the creator rotated one card from portrait to landscape and observed a clear temperature rise. Reverting the orientation did not bring the temperature back down. Der8auer points to the evaporation chamber design as a likely culprit, noting that coolant flow through this area may be hindered and less efficient than expected.
At the end of December 2022, another enthusiast, Igor Vallossek, carried out a separate set of tests that highlighted several potential overheating factors for the new AMD graphics processors. A principal finding was that the evaporation chamber could be a key bottleneck in effective cooling under certain conditions. These investigations come against the backdrop of a market that faced unusually high demand for graphics cards in 2022, with activity described as the strongest in two decades by some observers.
Overall, the discussions around RX 7900 thermal performance emphasize that orientation, airflow, and the internal cooling architecture all interact in shaping thermal outcomes. The variety of tests shows that heat behavior can shift with how cards are installed, indicating that users may need to experiment with mounting and case airflow to achieve more stable temperatures. Analysts and hobbyists alike continue to explore how design details inside the cooling loop affect performance, aiming to deliver practical guidance for builders who want reliable, quiet operation from their RX 7900 GPUs.