Question Motherboard and memory

What processor are you going to pair with either of those boards? Yes the rams will work but please keep in mind to buy 4 sticks to balance out the system/channels. After your first POST/boot, get into BIOS and take note of your BIOS version. Cross reference motherboard maker's supports site and if said motherboards are pending any BIOS updates. Gradually work your way to the latest, as opposed to jumping to the latest version.
 
I am thinking of "Intel Core i9-10900X"

Is that fine?

What processor are you going to pair with either of those boards? Yes the rams will work but please keep in mind to buy 4 sticks to balance out the system/channels. After your first POST/boot, get into BIOS and take note of your BIOS version. Cross reference motherboard maker's supports site and if said motherboards are pending any BIOS updates. Gradually work your way to the latest, as opposed to jumping to the latest version.
 
What processor are you going to pair with either of those boards? Yes the rams will work but please keep in mind to buy 4 sticks to balance out the system/channels. After your first POST/boot, get into BIOS and take note of your BIOS version. Cross reference motherboard maker's supports site and if said motherboards are pending any BIOS updates. Gradually work your way to the latest, as opposed to jumping to the latest version.

What does "please keep in mind to buy 4 sticks to balance out the system/channels." mean? What do "4 sticks" mean?