From PC Mag: AMD says it knows why some Radeon RX 7900 XTX graphics cards can overheat, forcing the performance to throttle. Apparently, a small batch of units have a faulty vapor chamber.
Scott Herkleman, SVP and GM of AMD's Graphics Business Unit, discussed the root cause behind the thermal issues in an interview with PCWorld. According to Herkleman, AMD has spent the last two weeks trying to identify the problem after some users, including hardware reviewers, noticed throttled performance on the flagship graphics card.
The company’s investigation traced it back to the Radeon RX 7900 XTX's vapor chamber. The water inside can help transfer and dissipate heat from the graphics card. But the company found that a select number of AMD-manufactured 7900 XTX cards sold on AMD.com and through some third-party outlets contain a defect with the cooling system.
"It all comes down to a small batch of our vapor chambers actually have an issue: not enough water,” Herkleman said. “It’s a very small percentage.”
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