Температурные датчики GPU Radeon VII

The next version of the HWiNFO utility will show the honest temperatures of GeForce RTX 3000 video cards

The real GPU temperature on GeForce RTX 3000 video cards in the hottest areas of the chip can be 11-14 degrees higher than the value shown by the available monitoring programs. But soon the HWiNFO program will provide access to the value of the true maximum temperature, as the authoritative resource writes. Igor’s Lab

Temperature Sensors GPU Radeon VII

Temperature Sensors GPU Radeon VII

Unfortunately, the temperature monitoring tools of modern video cards cannot fully satisfy enthusiasts and overclockers. Therefore, advanced users have to resort to additional software tools. For example, recently the popular utility HWiNFO learned how to measure the temperatures of memory chips, after which it turned out that GDDR6X memory on NVIDIA flagship video cards often runs at temperatures above 100 degrees. Now developer HWiNFO is preparing to add another important temperature value to the GeForce RTX 3000 – the temperature of the GPU’s hottest spot.

On each GPU crystal, as a rule, several dozen thermal sensors are installed, each of which reads the temperature in its own area. However, in practice, the GPU temperature is displayed by monitoring programs as a certain average value (Junction Temp). Meanwhile, the temperature in different areas of the chip can vary significantly. It depends on the computational load on a particular area of ​​the crystal, the flatness of the crystal surface, the efficiency of the cooling system used, and even the correctness of the thermal paste applied to the chip. Thus, the average temperature indicator does not always reflect the real picture.

The HWiNFO monitoring program can already read the temperature of the hottest point (HotSpot) of the GPUs of the Radeon RX 6000 series graphics cards, since AMD in this regard was more transparent. At NVIDIA, apparently, they thought that this information would not be useful for the user. In fact, it turns out that the temperature that NVIDIA proposes to focus on does not describe the real state of affairs with heating.

For example, the average GPU temperature of the MSI Radeon RX 6800 XT Gaming X video card (shown as Edge in the graph below and highlighted in green) is about 65 degrees Celsius under load. Meanwhile, the temperature of the hottest point (HotSpot) may differ by 12-20 degrees upwards and reach 90 degrees Celsius.

The upcoming new version of the HWiNFO program will be able to make similar measurements for NVIDIA video cards. Resource Igor’s Lab I have already tested it and found that the difference between the average GPU temperature of the GeForce RTX 3090 Founders Edition video card, which users usually see, may differ from the temperature of the hottest spot by an average of 11-14 degrees Celsius.

For most users using video cards for their intended purpose, that is, for work and play, this information really has almost no practical value. However, for overclocking enthusiasts, this information can be very useful, since it directly or indirectly indicates the effectiveness of a particular cooling system. Using the example of the same measurements for the GeForce RTX 3090 Founders Edition, it can be noted that the CO of the video card copes with cooling the GPU much better than the cooling system of the MSI RX 6800 XT Gaming X, even despite the difference in the level of power consumption of video cards. In the first, it is declared at around 350 W, and in the second, at 300 W. At the same time, the memory chips on the flagship NVIDIA card are much worse cooled, since this video card uses two sets of modules located on both sides of the board. Fortunately, this operating temperature is quite normal for GDDR6X memory.

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