Temperature curves and cycle
The temperature curve of a GPU differs considerably depending on the load profile. In a constant stress test, the GPU remains at full load throughout, which leads to stable heat development and an even temperature curve, as energy consumption and cooling remain constant. Gaming scenarios, on the other hand, are characterized by changing loads. Technologies such as power gating and separate power rails reduce the activity of unused units, resulting in fluctuating energy consumption and temperature fluctuations. Accelerated Frequency Switching adjusts clock frequency and voltage within microseconds, which optimizes energy consumption but generates irregular heat. These differences illustrate the efficiency of modern power management technologies. While constant loads provide thermal stability, dynamic scenarios demonstrate the GPU’s flexibility to adapt to variable demands in an energy-efficient manner.
Memory temperatures remain constant even during dynamic load changes thanks to the efficient cooling design. A separate power supply via separate power rails ensures a stable power supply, regardless of GPU fluctuations. The central placement of the circuit board in combination with large heat pipes and an optimized cooling fin array ensures even heat dissipation and prevents thermal hotspots in the memory area. While the GPU core exhibits significant temperature fluctuations, the memory remains stable thanks to the constant power supply and optimized air circulation. Even under high load, the memory temperature reaches a maximum of 74 °C, which ensures reliable performance and a long service life for the memory chips.
The clock rates are a maximum of 2670 MHz under full gaming load and only reach almost the 2800 MHz mark at minimum load. Our OC special (see link below) shows how to achieve even more. This card here still managed around 3.1 GHz and just under 3000 MHz for memory.
Thermography during load operation
Thermography with the Optris PI 640 enables precise temperature measurements and provides detailed insights into heat distribution. With a resolution of 640 x 480 pixels and a thermal sensitivity below 75 mK, the camera makes even the smallest temperature differences visible. The correct emissivity setting, based on comparative measurements with K-type sensors, ensures accurate results. This allows hotspots and areas with efficient heat dissipation to be reliably identified.

The cooling design ensures even heat dissipation, which can be seen in the thermography through homogeneous temperature zones. The GPU and voltage converters exhibit moderate, well-controlled temperature peaks, while the memory temperatures remain stable. Thanks to a frame rate of up to 32 Hz, the camera can also capture dynamic temperature changes. The measurements were carried out in three scenarios: in idle mode (see above), in gaming mode and under full load, each after 30 minutes of runtime.


Noise emissions (“volume”) and fan speeds
The analysis of the fan curves and audio measurements in an acoustic measurement chamber provides information about the noise development of the GeForce RTX 5070 Ti. The fans are optimized to provide a balance between cooling performance and noise level. Due to the smaller cooling surface of the Ventus cooler compared to the Vanguard models, the fan speeds increase more under load, which is reflected in increased noise development. At low to medium speeds, however, the noise level remains at an acceptable level.
The spectrogram shows that a 400 Hz component only occurs in certain speed ranges and not continuously. The noise levels correlate with the temperature curves, which indicates that the fan curves are specifically tuned to achieve a balance between cooling and volume. However, at just under 43 dB(A) under load, the volume is already above the limit of a still pleasant range. There is quite a lot of noise.
The phenomenon of coil beeping can no longer be heard under load. The coil noises are caused by mechanical vibrations in the induction coils of the VRMs, which are caused by the rapid changes in the current flow. The intensity of the coil beeping therefore depends heavily on the load situation of the GPU. Under high loads, especially in applications with very high frame rates (FPS), the current consumption of the GPU increases significantly. In such scenarios, the voltage converters operate at maximum efficiency, which keeps the switching frequencies constantly high and increases the mechanical vibrations in the coils.
Interestingly, the use of Multi-Frame Generation (MFG), a technology of the NVIDIA Blackwell architecture, reduces coil noise. MFG allows the GPU to process multiple frames simultaneously, flattening the load peaks. This results in less abrupt power consumption and smoother operating conditions for the voltage converters, significantly reducing the intensity of coil noise. This technology not only helps to increase the performance of the GPU, but also to improve the acoustic user experience. Of course you can listen to it now:
- 1 - Introduction and details of the Blackwell GB203-300-A1 GPU
- 2 - Test system and equipment
- 3 - Teardown: PCB, components and cooler
- 4 - Material analysis and heat conducting materials
- 5 - Gaming: Full-HD 1920x1080 Pixels (Rasterization Only)
- 6 - Gaming: WQHD 2560x1440 Pixels (Rasterization Only)
- 7 - Gaming: Ultra-HD 3840x2160 Pixels (Rasterization Only)
- 8 - Gaming: WQHD 2560x1440 Pixels, Supersampling, RT & FG
- 9 - Gaming: Ultra-HD 3840x2160 Pixels, Supersampling, RT & FG
- 10 - DLSS4 and MFG: Cyberpunk 2077 in detail
- 11 - DLSS4 and MFG: Alan Wake 2 in detail
- 12 - PCIe 5 problems, power consumption in practice
- 13 - Load peaks native vs. DLSS4, PSU recommendation
- 14 - Cooler, temperatures, thermography, noise
- 15 - Summary and conclusion









































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