If i have 16 GB then should i upgrade?

Personally, I'd say with that CPU, you'll probably be okay with 2x8GB, but there's no harm in having 2x16GB if you have the cash to spare. If you're multi-tasking, more RAM is better, but remember that you've only got 4x2 threads with that processor, so it's not going to be a compiling monster.

HOWEVER - don't buy the RAM before you've at least identified a motherboard. Ryzen RAM compatibility isn't as terrible as it was for the first generation of Zen chips, but you'll want to make sure that your RAM is officially supported by your motherboard in case there are issues (it means you might get support beyond "that RAM isn't supported").

https://www.techspot.com/article/1770-how-much-ram-pc-gaming/

Ryzen now gets boots with all 4 slots filled with ram, Gamers nexus showed charts with the 5000 series gaining actual fps gains in games with 4 slots vs 2.

anything bellow the 5000 series I would say 2 slots of min in single rank or dual

I would say 64gb but that would sound like what a noob kid would brag about , so i recommend 128gb

Funny thing is, that it's actually not unrealistic at all. My current computer with 32gb hits 19 to 23 when I'm doing work on it. the DDR5 design promises to hit accommodations 32GB minimum in a single stick compared to 16 on DDR4
We will see kits if anything start from 64gb that will most likely replace the 16gb kits so 128 might be the new 32gb or 64 kit of today.

Few more years ;)

32GB is better than 16GB.
nvme is better than SATA.

Prove me wrong.

cats are fluffy and I have 64 GB of RAM

16GB is still enough

If you intend to game at 4k then 16gb or more is always better and NVME would make your RIG more future proof. Some of the upcoming games mayrequirea NVME SSD. IMO, the SSD is more important than going over 16 gigs of ram.

yeah, imho 16gb isnt enough anymore, at least if you multitask much , pointless to only get 16gb only if buyer has not enough money

You would have to havw a specfic reason to have 32 gbs, almosy nothing as far as gaming can use that, there is only one exceptiom i know of and its gal civ 3, but that cpu you have would be to slow to play on the max setting and size making 32 gbs useless there.

So unless you are gonna run like 5 games at once it would be better to go with faster ram not more ram. As for m.2 drives unless you are transfering huge files between 2 of them, they are meanjngless. The differnce between a 850 evo and the 960 evo is about 1500mbs, but i never noticed. It is not like goint from a 7200 rpg to a 850 evo.

Most of this stuff gets gimicky like anything, you really have to have spefic reasons to make the stuff worth the money. With SSDs a 1tb sata would last longer than say a 256 m.2. The speed differnce would be almost none noticeable.

Depending on what you are doing, and how much you have to spend it would be better to buy a pre made computer they wtill have 3070s coming with those.
There will never be a game that requires a m.2 drive. All it does is make loading faster. I am also not sure what you are talking about wirh 4k resoultions, they have nothing to do with ram at all. That has to do with your video cards memory. Unless you are suggesting they dont have a video card, and that makes playing at 4k impossoble anyways.

A ssd only function is for loading speeds, once you get into a game it is meaningless, and once you get above samsung evo 850 speeds of like 500mbs the returns are not even noticeable tor most things. If you are a patient person, than ssds are meaningless all together.

What excatley are you doing that goes over 16gbs? You also have to remember windows doesnt really show you how much free memory it has, becauee it resereves alot of it.

I have yet to encounter anything that requires 32 gbs of ram, even when I played 3 eve onlines, watched movies and used chrome. Also windows just doesnt like shut off if you open to many things they just start goint slower.

I think it is like anything else, people hype stuff up dont really know why and then try to justify why they have it.

Unless you have a spefic reason 32 gbs is a big waste. It would be equal to buying 1600 dollars in speakers, and 1600 reciever, to play it on 45 db, when unless ypi crank it to over 97 dbs you cant tell 8bit from 16bit music. Adding in like the 24bit music is a total waste, you would have to turn it up so loud your ears would expolde.

running vm-s like bluestack , and then running another game + browser + music it can stuck up to 16gb, to be honest my cpu cores run out quicker than 16 gb ram :P

i agree with the music part , most of those options are just for hipsters showing off , like using flac instead of mp3 or similar
the better quality is only in their mind

Otherwise I'd agree but...