Valve’s Steam Machine is getting a new BIOS update to make sure the ‘red line of death’ is less common
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Valve is preparing a BIOS update for the Steam Machine that should make the device’s red LED, also known as the “red line of death,” temperature warning much less likely to appear during normal gaming sessions. The change comes after users reported that the warning light was activating even when CPU and GPU temperatures were still within safe operating ranges.
The issue first gained attention through a Reddit post from user Pure-Outcome-5977, who shared a screenshot of a Steam Support response. According to the post, the Steam Machine’s full red LED bar was appearing while monitoring software showed the CPU at 81°C and the GPU at 71°C. Those temperatures are well below the device’s actual thermal throttling limit.
100°C to be new threshold for Steam Machine’s red line
In the support message, Valve confirmed that the current BIOS has a known issue that causes the red LED warning to display earlier than intended. The company explained that the problem is related to the warning threshold itself, not to the Steam Machine overheating or suffering from a hardware fault.
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Valve clarified that the Steam Machine operates within normal temperature ranges at the temperatures shown in the user’s screenshots. The support response also stated that the system is designed to begin throttling performance at 100°C – the boiling point of water – for both the CPU and GPU, and to shut down automatically if temperatures rise beyond safe levels.
To address the false warnings, Valve is raising the red LED threshold to 100°C for both the CPU and GPU. Currently, the BIOS appears to be triggering the warning at 95°C for the CPU and 90°C for the GPU, which may be why some users have seen the red light activate prematurely.
This adjustment should help reduce unnecessary concern for Steam Machine owners. A red LED warning can understandably appear alarming, especially for users who are not closely familiar with gaming PC temperatures. Valve has not announced an exact release date for the BIOS update, but Steam Support indicated that the fix should arrive soon.
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