Real achievable clock rates and overclocking
The clock rates of the achievable boost again rely on different boost steps for clearly defined temperature ranges. Thus, the card reached a stable 2820 MHz (blue curve) without further OC, and 3075 MHz (green curve) with maximum overclocking, which could also be kept stable in Ultra-HD.
With voltage boost via the enabled Afterburner, a stable 3150 MHz was possible, at least in WQHD. In Ultra-HD, the card at least managed 3120 MHz stably and without freezing.
Temperatures
Thus, we see in both gaming modes with and without OC that the GPU temperature is around 53 °C at maximum, the hotspot is in a bit 12 Kelvin higher, which is a decent value. Despite higher waste heat, the card is cooled identically, which also means that the fans simply turn a bit higher. However, this is less annoying because it remains pleasantly quiet.
The IR control image does not reveal any abnormalities:
Fan curve and operating noise (“volume”)
Let’s also take a look at what is automatically generated when the waste heat is removed: various fan noises. But beware: The loudest fan is a hybrid fan on the graphics card! With an average fan speed of around 1500 rpm (up to 1530 with OC), the card is still really quiet, although not quite as whisper-quiet as the SUPRIM X with air cooling. It is a little faster, but I don’t want to anticipate the test.
The two fans on the radiator spin much lower at just under 1200 rpm and 1240 rpm in OC mode, respectively.
Measuring a hybrid card is a bit tricky, so I placed the normal measurement microphone and the radiator so that the distance between the microphone and both sound sources is 50 cm each. Since it is an omnidirectional microphone, this is quite alright.
The measured just under 34 dB(A) in overclocked mode is just as good as the just under 33 dB(A) in gaming mode without overclocking and the slightly under 30 dB(A) in silent mode.
I did not use a frequency analysis this time because too many factors can distort the curves. The operating noise can be heard as a slight hiss, which seems quite pleasant. And it really is so quiet that you can also hear the buzzing of the coils. Only now it is not the coils that are much too loud, but the fans are just so quiet.
- 1 - Introduction, technical data and technology
- 2 - Test System and the igor'sLAB MIFCOM-PC
- 3 - Teardown: PCB and Cooling System
- 4 - Gaming Performance
- 5 - Power Consumption and Load Balancing
- 6 - Load peaks, capping and PSU recommendation
- 7 - Temperatures, Clock Rate, OC, Fan Speed and Noise
- 8 - Summary and Conclusion
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