From ExtremeTech: Though AMD’s all-new Radeon 7900 series cards have been relatively well received by the gaming public, all the news about them post-launch has been surprisingly negative. Reports have already surfaced of broken shader prefetch hardware in some cards using early silicon, which AMD has said isn’t a thing, and now German site Hardwareluxx has received numerous reports of Radeon 7900 XTX cards overheating in its forums. There are apparently enough reports that it got AMD’s attention, as the company says it’s investigating the issue.
The problem only exists on the AMD-designed boards so far. Those are the black-and-red cards that are sold by AMD as well as some of its partners. What is happening is there’s a huge delta between the temperature of the main compute die and an adjacent hotspot. The delta is so large that it’s beyond the spec designed by AMD. This is causing GPUs to throttle thermally as the hotspot reaches over 100C. For example, on custom cards from Asus, XFX, and Sapphire the delta between temps isn’t bigger than 20C. However, on some of the AMD-designed boards, it’s as high as 53C. That means the Graphics Compute Die (GCD) is 56C, and the hotspot is 109C.
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