Overheating of the AMD Radeon RX 7900 XTX reference models has been a hot topic for the past few weeks. Although not long ago AMD also stated that the situation was normal and refused to refund, but it seems to have changed its attitude quickly, saying that they are investigating the problem and users should contact AMD’s official support personnel. According to Wccftech reports, Der8auer, a well-known Youtube hardware blogger, seems to have taken the first step and found the core cause of the overheating of the graphics card.
Der8auer said he has received 48 reports of similar incidents, and some users have even sent him graphics cards for investigation. After analysis, Der8auer believes that reinstalling the heat sink and tightening the screws to make the GPU and the heat sink more tightly fit is useless. The real problem comes from the hardware defect of the heat sink.
Der8auer has developed a variety of experimental methods, including vertically installing the graphics card, removing the backplane, replacing the gasket, and even shortening the radiator bolts to test the temperature change. But in the end, the RX 7900 XTX public version still had a junction temperature of 110 degrees. Therefore, Der8auer believes that this is not a problem caused by the assembly of the graphics card, but an internal defect of the heat sink.
Further, Der8auer speculates, this could be down to the material or design of the vapor chamber on the radiator. Generally speaking, the heat dissipation process of the vapor chamber goes through the vaporization-liquefaction stage, and the vapor chamber of the RX 7900 XTX public version may prevent the return of the liquid, causing the heat of the GPU to be unable to continue to be transferred out. At present, in order to prove his conjecture, Der8auer is dismantling and analyzing the radiator of the graphics card, and the relevant video will be released later.If the situation is true as Der8auer’s conjecture, then AMD will have to suspend sales and recall the current RX 7900 XTX public version products. In addition, it will take some time to repair and produce new radiators. It can only be said that AMD has indeed made a bad start this time.