Effective frequencies?
As with every new processor test, our first idea is to check if the announced frequencies are really reached. To do so, we will use the Cinebench R23 benchmark. Two cases will be used, a single core bench and a second one in multi core.
Test with i9-12900K :
And in reality? First step, we leave everything in AUTO in the BIOS except the XMP profile that we load to have a frequency of 5200 MHz 38-40-40-78 for our memory kit. We do not make any other changes in the BIOS. The idea is, as we said, to see if the frequencies are respected at the end of the box. Let’s start with a single core test in Cinebench R23. As you can see, we have opened several windows to check the frequency.
No worries, we can see that two cores regularly go to 5.2 GHz, which corresponds well to the Boost frequency of our i9-12900K. It is especially the number 4 core that reaches this frequency. In multi-core, the frequency is also well respected, with 4900 MHz on the eight Performance cores.
Test with i5-12600K :
Same goal with the i5-12600K. In single core, it is indeed the 4900 MHz which are reached on the core 0. We can notice that it is him which heats more. This is logical.
Finally, in multi-core, we have a frequency of 4500 MHz on the six cores. We’ll talk about this later, but like the P-core, the E-core can also be overclocked but within a fairly limited range.
Now that we know that our two processors are perfectly operational, we can move on to overclocking. If you want to know the performance of the i9-12900K and the i5-12600K, this is the place to go.
