Saturday 26 October 2019

amd radeon - VGA temperature is allegedly 511 °C


I'm using HP Probook 450 G2 with AMD Radeon R5 M255 VGA card.


Look at the temperatures (notice 511 °C) and tell me: is this normal or is it just a program lag?


high temperature


normal temperature



Answer



If it was a proper value, your computer would have caught fire, I think.


Notice: decimal 511 = binary 111111111.


This may be a software bug or a sensor error. I mean: something didn't know what the reading had been, so it set its output to the maximum.


Another possibility: the sensor output was internally correct but out of scope for your software. It's not a big deal if it was low (e.g. booting while inside walk-in freezer). On the other hand if it was high enough to be out of scope for any sane software, the magic smoke would probably have escaped. Try different software maybe and compare.


Modern BIOSes/EFIs monitor temperatures. Such a high reading coming from the sensor should cause your laptop to emergency cut the power. For this reason I would suspect the software rather than the sensor.


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