The 1.10 is the newest one that includes the new microcode 3C.
https://www.msi.com/Motherboard/support/Z590-A-PRO
They had two updates before to arrive at this one, but they were beta updates, so they removed them, now that there is the final update.
You definitely want to update to this microcode ASAP, it's quite important for Rocket Lake.
The power consumption always likes to go up momentarily when Windows checks for updates, or the MS Antivirus checks some files. 50W shows that it's mostly single-core load. This is pretty normal.
So first, update the BIOS. Then, to have the lowest power consumption, enter the BIOS, press F7 to switch to advanced mode, go to OC -> Advanced CPU Configuration.
There, set C1E Support to Enabled, set Intel C-State to Enabled, and under "Package C-State Limit", select C10 instead of Auto. This makes sure that the CPU enters the deepest low-power states when there is nothing to do. It won't influence performance.
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Furthermore, the option "CPU Lite Load" is very interesting, i always use it with Intel. CPU Lite Load is basically the "silicon quality" setting. They are testing hundreds of CPUs for the variance in quality, i.e. how high of a VCore is required for stability, and then they put in a default value like 8 or even 12, to be able to run 99.9% of the CPUs of varying VCore requirements. If you lower the setting, you are fine-tuning it down, to be more exact to your specific CPU. But you must ensure that it is Linpack-stable.
Linpack Xtreme:
https://www.techpowerup.com/download/linpack-xtreme/
Run Linpack, select 2 (Stress test), 5 (10 GB), set 10 times, press Y to use all threads, and let it do its thing.
It's by far the best tool to detect instability, reacts even quicker than Prime95 and much quicker than OCCT. Warning, this generates a lot of heat.
As you can see there on the photo, in my test system right now, my 11500 can manage CPU Lite Load Mode 1, meaning, the lowest VCore in any load situation. So i have a good quality silicon. You can try mode 6 or 5 first, seeing if it's stable, and if yes, go all the way down to Mode 1 if the CPU is good. Here is a Youtube video showing it, it's in German, but might get the gist of it:
