Well, you are actually testing it as we speak.
🙂If all your devices are working with no issues, it would seem there are no problems.
You can run a stress test to see your system is fully stable and run a benchmark to see your scores are in line with other users with the same hardware.
I use HWinfo (which is free) to show clock speeds, voltages and temps.
Here is the download link for HWinfo if you'd like to use it -
https://www.hwinfo.com/download/Under INSTALLER click the Free Download in green, then local U.S., I see your in the Czech Republic but should still work.
The red lines are showing my RAM statistics, HWinfo monitors just about everything in your pc.
Click the pic to make it bigger.