>>105858198
Cheaper motherboards may have stricter CPU power limits to protect the modest amount of VRMs (that are usually lacking a heatsink).
It should be okay for gaming.

PSU, at least buy one that was tested to be safe. There are resources in the OP.

>>105858665
Keep tRAS at EXPO or JEDEC setting, tighter values provide no performance gain and might cause strange instabilities (esp. if using iGPU).
https://www.youtube.com/watch?v=BS_NeTwjOvY