Recently, a number of RTX 5090 graphics card users have reported an issue: during gaming sessions, their graphics card fans produce piercingly loud noises. When they took apart the graphics cards for inspection, a shocking scene unfolded. The thermal grease had been applied in a highly uneven manner. A substantial amount of it overflowed and smeared across the entire PCB board. Meanwhile, the crucial GPU core surface was left almost bare, essentially in a state of "dry running" without adequate thermal interface material. This lopsided application of thermal grease severely hampered the efficient transfer of heat from the core. As a result, the fans were forced to spin at extremely high speeds, which in turn generated a great deal of noise. Users are also deeply worried about another potential hazard. If the graphics card is installed vertically, the overflowing thermal grease might drip onto the motherboard. This could pose a serious threat to the safety of other hardware components. Previously, the RTX 5090 had already come under fire for problems like melting power connectors. Now, this thermal - related issue has once again cast doubt on the quality control standards of high - end graphics cards.