Temperature curves and clock
The GPU temperature curve varies considerably depending on the load profile. In a constant stress test, the heat development remains stable, as energy consumption and cooling are even. In gaming scenarios, changing loads lead to temperature fluctuations. Power gating and separate power rails deactivate unused units, while Accelerated Frequency Switching adjusts the clock and voltage within microseconds. This optimizes energy consumption, but with irregular heat generation. While constant loads offer thermal stability, the efficiency of modern power management technologies is demonstrated in dynamic scenarios.
Thanks to the efficient cooling design, storage temperatures remain constant even during load changes. Separate power rails ensure a stable power supply, regardless of GPU fluctuations. The central PCB placement, large heat pipes and an optimized cooling fin array enable even heat dissipation and prevent thermal hotspots. While the GPU shows significant temperature fluctuations, the memory remains stable thanks to a constant energy supply and optimized air circulation. Even under high load, the temperature does not rise above 68 °C, which ensures reliable performance and a long service life.
Under full gaming load, the GPU reaches a maximum of 2670 MHz, while at minimum load it is close to 2800 MHz for a short time. Our OC special (see link) shows how even higher clock rates can be achieved. This card achieved around 3.2 GHz for the GPU (330 watt power target) and a stable 3000 MHz for the memory in the test.
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 of less than 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 is reflected in the thermography by 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 running time.
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 Gaming Trio. The fans are optimized to provide a balance between cooling performance and noise level. At 1350 rpm, the card is significantly quieter than the Ventus from MSI tested yesterday.
The spectrogram shows that a lower-frequency 175 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 noise. At just under 32 dB(A) under load, the noise level is well below the limit of an unpleasant range. There is some noise, but the card is really quiet.
Coil beeping is barely perceptible under load. The noise is normally caused by mechanical vibrations of the induction coils in the VRMs, caused by rapid changes in the current flow. Their intensity depends on the GPU load, especially at high refresh rates when the voltage converters are operating at maximum efficiency and the switching frequencies remain constantly high. The multi-frame generation (MFG) of the NVIDIA Blackwell architecture reduces these effects by processing multiple frames simultaneously and flattening load peaks. This keeps power consumption more consistent, which not only optimizes performance, but also significantly reduces coil noise.
- 1 - Einführung und Details zur Blackwell GB203-300-A1 GPU
- 2 - Testsystem und Equipment
- 3 - Teardown: Platine und Kühler
- 4 - Materialanalyse und Wärmeleitmaterialien
- 5 - Gaming Performance; Rastergrafik
- 6 - Gaming Performance: Supersampling, RT & FG
- 7 - Leistungsaufnahme, Lastspitzen und Netzteilempfehlung
- 8 - Kühler, Temperaturen, Thermografie, Geräuschentwicklung
- 9 - Zusammenfassung und Fazit
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