GeForce RTX 5000: The Hotspot Sensor Exists, but NVIDIA Doesn't Want You to See It
NVIDIA GeForce RTX 50 GPUs continue to stir discussions regarding temperature monitoring. Following the debut of the Blackwell family, numerous users noted the absence of hotspot temperature readings in popular diagnostic software, including HWiNFO, GPU-Z, MSI Afterburner, and HWMonitor. Many speculated that the sensor had been eliminated from the hardware, but new investigations tell a different reality.
New evidence was provided by a Brazilian repair lab led by Paulo Gomes, which analyzed a GeForce RTX 5070 Ti suffering from overheating issues and underwhelming performance. By using MODS (Modular Diagnostics Software), an internal tool employed by NVIDIA for video card validation and during support procedures, the team was able to access data that is usually invisible to users.
The test revealed a very different behavior compared to what was shown by traditional software. While the average GPU temperature ranged between 67 and 68 °C, the hotspot temperature quickly reached 107 °C under load, which is the maximum limit set by NVIDIA for GeForce RTX 50. Once this threshold was reached, the card automatically reduced its operating frequencies to protect the chip, resulting in a performance loss.
According to the findings, MODS is not publicly available and requires a Linux environment booted directly in console mode, as Windows interferes with access to the necessary hardware APIs for diagnostics. The tool is complemented by MATS, which is dedicated to video memory testing. Some repair centers manage to access these tools, allowing them to verify the presence of the hotspot sensor even on gaming-targeted Blackwell GPUs.
The inspection of the card then identified the cause of the anomalous behavior. The issue was not with the graphics chip but rather the thermal contact between the heatsink and the GPU. The TIM (Thermal Interface Material) was unevenly distributed: the thermal paste had accumulated along the perimeter of the die, while the center appeared almost devoid of material. After replacing the thermal paste, the hotspot temperature dropped to about 100 °C, eliminating thermal throttling and restoring expected performance.
According to the Brazilian lab, similar cases have appeared on various GeForce RTX 50 units received for service. In many of these instances, users reported particularly noisy fans and performance below expectations, despite the average GPU temperatures appearing normal. The absence of hotspot temperature readings indeed makes it much more difficult to identify issues with heatsink contact or improper application of thermal material.
The discovery confirms that NVIDIA has not removed the sensor from the hardware of the GeForce RTX 50 but has merely excluded access for users who cannot view the data via monitoring software. In contrast, the company's professional and data center GPUs come with much more comprehensive diagnostic suites able to monitor numerous operational parameters, including hotspots and the conditions of the cooling system.
This case has clearly opened the discussion regarding NVIDIA's choice and, above all, the usefulness for users to be able to see the hotspot temperature of their graphics card. In the absence of this data, it is much more complex to identify the problem, especially if the chip temperatures fall within the normal range. This "forces" many users to blame drivers or other factors that inevitably lead the card to operate around the threshold temperatures and inevitably hasten its wear.