The frequencies reached?
As with every new test concerning processors, our first idea is to check if the announced frequencies are really reached. To do this, we will use the Cinebench R23 benchmark. Two cases will be used: a single core bench and a second one in multi core. The idea is to be able to judge the frequency reached and thus, to compare with what was announced by AMD in its slides.
Remember that the Boost frequency in bench is different depending on the processor. Be careful, as AMD points out, when we talk about maximum Boost frequency, it is the maximum frequency achievable by one of the processor’s cores running a single-core workload (mono-thread). The maximum boost varies according to several factors: the load, the cooling system and therefore the temperature of your processor. This is a notion to keep in mind. Here are the maximum frequencies that we should reach on a single core during our run under Cinebench R23.
First step, we leave everything in AUTO in the BIOS except the EXPO profile that we load in order to have a frequency of 6000 MT/s in 30-38-38-96 for our memory kit. We do not make any other changes in the BIOS.
Test with the Ryzen 7 7800X3D:
Here we go with our Ryzen 7 7800X3D. As you can see, we opened several windows to check the frequencies as well as the temperatures.
In single core, we can see that core #1 and #3 work alternately and reach the frequency of 5045 MHz, which is slightly higher than the 5.0 GHz announced by AMD. The reason for this is most likely the cool temperatures brought on by our liquid cooling. Note however that the Ryzen 7 7700X sees its boost frequency reach 5500 MHz with the same cooling system.
When the 8 cores of our Ryzen 7800X3D are used, the frequency varies between 4850 and 4875 MHz. If we compare it with the Ryzen 7 7700X, which also has 8 cores, the frequency can rise to 5275 MHz. It is therefore logical that we have differences in performance in the benchmarks between these two processors even if on paper they both have 8 cores and 16 threads. The temperature rises to 75°C during the R23 run with our liquid cooling loop and we had a temperature of 84°C with the 7700X.
