Power consumption as an average and load peaks
There is no significant difference in average power consumption between the Insane and Extreme profiles. On the contrary, only the difference between the first two profiles mentioned and the Performance and Baseline profiles becomes enormous. The difference between the “Performance” and “Basic” profiles, on the other hand, is only around 10 W.
In contrast to the average power consumption values, there are considerable differences in the peak values. As we can see, the i9-13900K reaches a peak value of 492 W in the Insane profile, while the power consumption is just under 432 W in the Extreme profile. Even in the more conservative “Performance” and “Baseline” profiles, the CPU’s peak power consumption is far from the corresponding BIOS settings. Imagine this processor paired with an NVIDIA RTX 4090 with a 600W BIOS. Fortunately, all ATX v3.0 and v3.1 power supplies can handle up to 200% of their maximum power peaks.
The average CPU temperature between the Insane and Extreme profiles is minimal. The difference between the Performance and Baseline profiles is also small, but the difference between the above profile pairs is enormous.
The differences between the profile pairs are small, but the frequency difference between these profile pairs (Insane/Extreme and Performance/Baseline) is enormous.
In Cinebench R23, the Insane profile offers the highest performance, as expected, with a clear difference to the others. The Baseline profile has a strong impact on the CPU’s performance, while the Performance profile is almost 10% away from the Insane profile and almost 6% away from the Extreme profile.
Summary and conclusion
The architecture remains the same, in case you are wondering why I am buying a 13th generation CPU and not a 14th generation CPU. The main difference between the i9-14900K and the i9-13900 K is the higher boost clock of 6 GHz compared to 5.8 GHz for the i9-13900K. Also, I buy the CPUs I use in my tests out of my own pocket, and since I have no sponsors, my budget is limited and the risk of total loss is unfortunately always testing.
The main conclusions from this article are as follows:
- The power profile or settings have a big impact on CPU performance.
- You should set the performance profile that best suits your cooling solution.
- The better the cooling solution, the higher the available performance.
- Intel high-end CPUs are power-hungry and remain so!
- For optimal performance, you need a powerful power supply.
Another thing I’d like to add is that in all this time, I haven’t noticed any issues with my i9-13900K, which I’ve been pushing to the limits in my CPU cooler test station for over a year. If you do notice any strange issues, given that these CPUs are incredibly power hungry, you should also check the power supply first to see if it’s really up to the task, as power supply issues can cause several subsequent problems. Based on my experience as an electronics engineer for nearly three decades, my advice is this: Whenever you have a stability problem with your system or any device in general that requires power to operate, the first thing you should check is the power supply system. Golden rule.
The article by my guest author was published in Orioginal on on his homepage hwbusters.com. It’s always worth taking a look at his site, even for other topics. I would like to take this opportunity to refer you once again to the follow-up article with the workstation test, which will also be published this week.
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