According to Paulo Gomez, a specialist repair technician based in Brazil, the RTX 50 series retains its hotspot sensor. As the name suggests, this sensor provides information on the highest temperature on the GPU core. It’s a very useful sensor, as it helps detect thermal anomalies on the chip when reassembling the heatsink—for example, after replacing the thermal paste or installing a water block. Although not accessible to the general public, this data can be read by the brand’s proprietary software.
RTX 50: Paulo Gomes confirms the existence of the hotspot sensor!
Accessible via NVIDIA’s internal software!
Broadly speaking, this sensor is still present in the GPU and behaves as expected. However, it is not accessible to consumer software because, on Blackwell, the API used to read this sensor has simply been removed. To read it, you must therefore use the MODS (Modular Diagnostic Software) program. This is internal software reserved for the Chameleon and is not available to the general public. However, it appears that copies are circulating in specialized repair shops.
Detect temperature anomalies where the average isn’t enough!
Basically, reading this sensor allows you to detect temperature anomalies, since the average isn’t always enough. In our case, with the help of the software in question, Paulo Gomes noticed that the RTX 5070 Ti reached the thermal limit of 107°C on five occasions, while the average chip temperature was only 68°C. That’s a huge difference, which highlights the need for access to this sensor’s readings—even in consumer-grade software like HWiNFO64. It’s all the more disappointing given that this sensor remains accessible on older-generation GPUs like the Ada Lovelace. Sometimes, it’s hard to understand the choices made by certain manufacturers!
