A report that actually verified the temperature of AMD Radeon RX 7900 XTX, which has a problem of performance degradation due to explosive heat of 110 ° C



AMD's graphics card Radeon RX 7900 XTX is

reported to experience thermal throttling with hotspot temperatures reaching 110°C. AMD has also confirmed that some RX 7900 XTXs have a faulty GPU cooler, causing overheating and thermal throttling issues. Software developer and YouTuber Jeff Gearing has published a blog about how he actually tested the RX 7900 XTX and contacted support.

How many AMD RX 7900 XTX's are defective? | Jeff Geerling
https://www.jeffgeerling.com/blog/2023/how-many-amd-rx-7900-xtxs-are-defective

In the movie below, after actually disassembling the RX 7900 XTX, it is speculated that there may be a problem with the contact between the vapor chamber and the heat sink.

We open the 7900XTX Vapor Chamber-YouTube



Mr. Gearing ran FurMark (donut) with MSI Kombustor , MSI's GPU benchmark & stress test tool, with the RX 7900 XTX installed horizontally to the ground, and the GPU utilization rate was 100%. I did a stress test. The settings are windowed mode with a resolution of 1280x720 pixels and the rendering API is OpenGL 3.2.0.



Then, in less than 7 minutes, the

junction temperature of the GPU reached 110 degrees Celsius and the fan speed reached 2900 revolutions per minute. GPU clock and power consumption dropped about 5-7%. The GPU temperature shows around 60 degrees, so the difference between the hotspot temperature and the GPU temperature is very large.



This time, after shutting down the PC once, I tilted the motherboard of the PC by 90 degrees, placed the RX 7900 XTX so that it was vertical to the ground, and ran FurMark (donut) again with the same settings. Then, the GPU temperature was around 70 degrees Celsius, the maximum junction temperature was 92 degrees Celsius, the fan speed settled down to 1700 revolutions per minute, and thermal throttling was not seen for more than 15 minutes.



I repeated the same experiment while changing the orientation of the RX 7900 XTX several times, and the result was 'Full performance lasts only about 5 minutes when the RX 7900 XTX is placed horizontally, whereas it is vertical. If you put it like that, the full performance state will last for a long time.' From this result, Mr. Gearing suspects that there is some problem with the RX 7900 XTX's vapor chamber, as pointed out so far.

Gearing contacted

Sapphire support, the manufacturer of the problematic RX 7900 XTX. Then, Sapphire's support said, 'Overheating of the RX 7900 XTX is a known problem. Please contact the dealer to return it and purchase another version of the RX 7900 series. However, when it comes to repairs, replacements, and repurchases, ``This support window does not accept such requests, and only supports product support and warranty services. Please confirm.'

Regarding AMD's statement that the overheating of the RX 7900 XTX is 'occurring in a limited number of products,' Gearing said, 'It is occurring in a limited number of cards. Even though we know this, it's strange that we can't immediately replace it with stock,' he said. Mr. Gearing said that if you know that it is really happening with some cards, you should be able to narrow down the problem graphics card from a series of serial numbers, and it is possible that AMD does not really understand the whole problem. possible design flaw that applies to all RX 7900 XTX products.

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in Hardware, Posted by log1i_yk