I've mentioned in the past my PC has a weird amount of RAM, specifically 10GB. This is the RAM the PC came with when my dad bought it for me in college and I never really thought much about upgrading since for years now most games still only needed around 8 GB of RAM at most. Well yeah it's looking like I need to change that, especially if I plan on eventually getting VR at some point as I noticed some VR games like Half-Life: Alyx require a MINIMUM of 12 GB of RAM, and within the past couple of years I've noticed some games recommending upwards of 16 GB of RAM for optimal performance (one of the first I saw with this was Deus Ex: Mankind Divided back in 2016).
The motherboard in my PC supports 240 pin DDR3 RAM, with the official specs saying it supports "PC3 10600 (DDR3-1333)" and "PC3 12800 (DDR3-1600)." Giving a look online I see a brand called "Crucial" popping up quite a bit and their prices and such look fine to me (also customer reviews were quite positive), but I most often hear people recommending RAM from companies like Corsair. I'm still kind of a novice when it comes to some of this sort of stuff (I also know a day will eventually come when the motherboard will need to be updated in order to also update the CPU as apparently this "Angelica" motherboard from 2012 can only be upgraded to an FX-8350 which is a CPU that AMD no longer sells themselves), so I'm looking for advice from those with way more knowledge than me.