BIOS and Overclocking …
The UEFI BIOS of the X870 Pro RS came with the outdated version 3.08 at the time of testing and is therefore compatible with the new Ryzen 9000 processors ex works. The BIOS was flashed to the current 3.15 at the time of testing. Of course, our Ryzen 7700X processor and the 2x 16GB DDR5 RAM were recognized straight away without any problems. 
For quick performance settings, there are again the useful performance presets, where a specific temperature limit and a negative voltage offset for the CPU can be set with a single click. 
With Precision Boost Overdrive (PBO), processor performance can be increased beyond AMD’s factory specifications up to the limit and energy consumption can be reduced even further thanks to the Curve Optimizer. Depending on the CPU installed, more or fewer options are available here. Ryzen 9000 processors can also be optimized with the Curve Shaper. 
We have summarized tips and support for overclocking AMD Ryzen CPUs from Zen2 (Ryzen 3000) in our AMD Ryzen OC guide and help for using the external clock generator can be found in the forum post Overclocking Ryzen CPUs beyond the PBO limit.
However, it is also possible to reduce energy consumption to 65W without using the PBO overclocking function, for example. Zen4 and Zen5 processors with 6 and 8 cores achieve almost their full performance at 65W with significantly reduced power consumption. 
RAM overclocking has also been improved with the X870. The first motherboards have now been certified to implement DDR5-8000 with EXPO. After installing an appropriately certified RAM kit, the EXPO profile stored on the RAM modules with DDR5-8000 only needs to be activated in the UEFI/BIOS and the RAM should run at this speed. 
In Customize mode, several temperature steps are available to which the desired fan speed can be assigned. 
ASRock has also integrated the graphical user interface for controlling the fans in the UEFI setup. The FAN-Tastic Tuning menu item can also be found in the H/W monitor and can be used to make all settings very clearly. 
The option of controlling the fans using a freely positionable temperature sensor T_Sensor1 has also been added. 
ASRock X870 Pro RS energy consumption results …