Thoughts? Just gaming here... on an RTX 2080

I ran 64 on a old build mostly because I was going to run a Ram drive but never got around to it.. so unless you got a smoking hot deal on the 64 gigs, stick with 32 or 16. Personally i am going for 32 just cause.

If you leave a million tabs open in browser like I do 32GB is nice otherwise 16GB is plenty.  64GB is a waste unless your workload actively uses it.

I always run 32 GB memory because I don't know what software I'm gonna try out.

bob16314
You can see your Current/Min/Max/Avg System Memory usage with HWiNFO (Free) in the Sensor -> System part.

Leave it run minimized and running in the background while you go about gaming and doing whatever else you do on your PC..Then check it.

Unused memory is wasted memory and adding more when not needed will do nothing except cost you money..You probably don't even need anywhere near your current 32GB.

You can also check your Current/Min/Max/Avg GPU Memory in %..Or use EVGA Precision or MSI Afterburner for Min/Max too..MSI Afterburner will track both System Memory (shown as RAM usage, MB) usage and GPU Memory (shown as Memory usage, MB) usage..Precision only tracks GPU Memory usage.

Going with 32GB is not that much of a waste for gaming. It's like $20-40 to go with (DDR4-3200) 2X16GB over 2x8GB. The extra RAM would come in handle for keeping apps running, without them causing performance issues.
Twitch
Discord
Browser with tabs open
Spotify
GPU monitoring software
Streaming gameplay
Live logging
Multi-boxing
Playing two games at once

16GB is the sweet spot for most PC.
 
32GB for those that need the extra RAM & can use it
 
64GB for anyone Not using professional software that can actually take advantage of it ... is a waste of money
 
How much RAM do you really need for gaming? | PC Gamer
 
Some CPU will not clock as high or the RAM timing must be increased when you add More RAM ... both are BAD for performance
 
Always best to check --> what the software Mfg you use - recommends

bob16314
Unused memory is wasted memory and adding more when not needed will do nothing except cost you money..You probably don't even need anywhere near your current 32GB.

Not only is it wasted memory and wasted money, but it also decreases system performance. Higher density memory operates at higher latency or lower frequency, and therefore performs slower than lower density memory.

I run a triple screen zoo here with apps running up the wazoo w/ 25+ tabs.  When gaming in BFV, I didn't realize I was chocking my PC RAM with only 16 GBs (2400).  Upgraded to 32GB (3200) and saw a jump in usage to almost 20 GB which tells me I was holding my machine back.  Feels more fluid now than before.  In the end, it all depends what your configuration is set as and what you're running.  Just for gaming, 16 GB should do you fine but 32 GB if you're looking to expand.  64 GB would be more for content creators, etc.

Cool GTX
16GB is the sweet spot for most PC.
 
32GB for those that need the extra RAM & can use it
 
64GB for anyone Not using professional software that can actually take advantage of it ... is a waste of money

If you don't do video editing/encoding, run VMs, or any "data center" tasks on your PC there's no reason to go above 32. If you're strictly gaming on this then there's no real reason to go higher than 16, unless you find a good deal on the 32GB kit.

Oh yeah, also wanted to point out that I wouldn't build a higher end PC today without at least 32gb of ram.  Ram is super cheap right now, half the price as it was a year ago.  The only exception is a dedicated high FPS gaming or benchmarking system where you're aiming for maximum CPU performance and OC with 16gb of expensive high clock low latency memory.
 
Like I said above, I can see 20gb used running ARK, which came out in 2015.  What's to say another popular open world indie-ish game won't come out in the next few years that runs best when hogging memory in the 20-30gb+ range?  Most mainstream AAA games run fine on a system with 16gb ram and will for the foreseeable future.
 

aka_STEVE_b
I have read many articles testing out the scenarios of ram usage. .. and the general consensus was that 16 gigs is optimum for gaming for 90% of PC users.
 
32 was for if you run production software/ video editing,/ photography/ ..etc... on up to 64 for hardcore Developers & up.
 
 

Those articles are outdated or failed to think about all the apps/browser tabs gamers keep open these days. With how cheap RAM is, it's not going to break the bank to spend $20-40 more to go with 32GB in a gaming PC. It's nice knowing i have enough RAM for any game that comes out for the life of my system.