Actual frequencies:
As with every new processor or motherboard test, our first idea is to check that the advertised frequencies are actually reached, so as not to falsify our tests. To do this, we’re going to use the Cinebench R23 benchmark. Two scenarios will be used: a single-core benchmark and a multi-core benchmark. The idea is to be able to judge the frequency reached and compare it with what Intel has announced in its slides.
It’s worth remembering that the Boost frequency in the bench is different for each processor. As Intel points out, Max Turbo frequency refers to the maximum frequency attainable by one of the processor cores running a single-core workload. This frequency varies according to several factors: the load, the cooling system and therefore the temperature of your processor. It’s important to keep this in mind. Here are the frequencies we expect to reach on a single core during our run under Cinebench R23.
First step: we leave everything in AUTO in the BIOS except the XMP profile, which we load in order to have a frequency of 7200 MT/s for our memory kit. We make no other changes to the BIOS.
Testing with the i9-13900KS :
Here we go with the strongest processor, the i9-13900KS. As you can see, we opened several windows to check frequency and temperature. The options in our BIOS were left in AUTO, but we’ll come back to this in the power consumption section, as it has a significant impact on consumption.
In single-core mode, we can see that cores #4 and #5 reach a frequency of 6000 MHz, which is in line with Intel’s claims. The temperature of the two cores alternating at 6 GHz is 60 and 64°C, while the others are not used.
When the 24 cores of our i9-13900K are called upon, the frequency is fixed at 5.5 GHz on the P-Core and 4.3 GHz on the E-Core. The temperature of the hottest P-Core is 87°C, while that of the E-Core is 69°C. Let’s not forget that we’re equipped with a 480 mm custom cooling loop. In other words, if you opt for this processor, you’ll need at least a high-performance 280/360 mm AIO.
