AMD FX-8370E at 3.5 GHz
We only increase the clock by 200 MHz slightly and do without the Turbo, which collapses under load anyway. For this, we leave all basic settings at exactly the same settings as they were displayed for the 3.3 GHz variant in the BIOS.
1. Core voltage (Vcore)
First, we look at the values for the applied core voltage and notice that the curve now runs more evenly without the turbo. Furthermore, the actual voltage applied to the CPU drops to an average of 1.14 volts when the Vcore is manually preset in the BIOS (BIOS preset for Vcore 1.1850 volts)
2. Power consumption
The power consumption at the feed from the power supply is 78 watts, which is only three watts more than the initial setting of 3.3 GHz. This now proves two things to us: Firstly, the motherboard’s automatic is worthless, since we use the manufacturer’s presets and otherwise also the same BIOS settings as in automatic operation at 3.3 GHz, and secondly, it confirms the CPU’s significantly increased efficiency:
3. Temperatures
Despite a slightly increased clock, the temperatures do not rise, which we would mainly attribute to the lower core voltage.
This CPU is still quite easy to cool even at 3.5 GHz; a product from the sub-20 euro range would probably easily suffice here.
AMD FX-8370E at 4.0 GHz
Let’s add a bit more and let the CPU run at a smooth four gigahertz.
1. Core voltage (Vcore)
An average of 1.17 volts is still enough for stable operation (we had to set 1.2125 volts in the BIOS for this). Even now, the curve looks very balanced.
2. Power consumption
Now let’s look at what we have to feed in total for CPU and converter. We now measure only 90 watts at the supply rail for the CPU, which should net out to about 80 to 82 watts for the CPU itself after deducting the voltage converter losses. So it does work, even if it is no longer spectacular by today’s standards.
3. Temperatures
The temperatures are also pleasingly low in idle mode and under load, so nobody has to cry for water here yet.
The heat pipe of the tower cooler is still only a modest 35°C warm, which speaks for the CPU on the one hand and the cooler on the other. This CPU can be overclocked stably and easily with only a very small voltage increase. Even at 4.0 GHz, the self-imposed TDP of 95 watts is still clearly undercut. If you are satisfied with the computing performance, the FX-8370E is an easy to cool and still quite frugal CPU. But the same applies here: Less power consumption is primarily achieved by a lower clock compared to the top models.
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