The dance around the golden calf: 4.2 GHz
After we found out that it is not so much the cooling but simply the efficiency that is the actual limiting element of the FX-8370E, we slim down the cooler properly and theoretically almost halve the cooling performance. The system now uses a be quiet! Shadow Rock Slim, whose fan we also run at under 600 rpm. We measure a noise level of 31.4 dB(A) at a distance of 50 cm (see picture below) after replacing the camera with our studio microphone.
1. Core voltage (Vcore)
On average, we measure 1.18 volts for this clock, which doesn’t change when we fall below the BIOS preset value of 1.215 volts. However, the system becomes unstable at presets of 1.2 volts and lower. Ergo: Do not undervolt too much!
2. Power consumption
We measure 103 watts maximum, whereby the voltage converters also have a not insignificant share here. In reality, the CPU will hardly consume more than 90 watts, the rest is burned in the voltage converter light chain visible in the infrared pictures, which turn out analogous to the 4.5 GHz variant and which we will simply spare because of the repetition.
3. Temperatures
Another 47 °C as package temperature and a whole 51 °C at the self-applied heatspreader sensor are a clear sign for AMD-stressed cooling paranoiacs towards restoring the mental equilibrium. Here, even the one or other budget cooler for 15 to 20 Euros, which was specified for at least 90 watts, would still suffice.
If you really want to play games, 4.2 GHz is probably the best choice, because the free performance boost is almost 30 percent! The mixed user and the eco person better stays with the optimal 3.8 GHz and the housewife will also be happy with the factory clock, if she really needs eight cores. And what else? Let’s wait for the benchmarks to see to what extent this constellation can even keep up with the competition.
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