Is changing graphics memory cost-effective?

Hello,
So for those who may not be aware, yes, we can change the memory chips on our Graphics Cards, but not for those who have no knowledge.
First, you need to have specific tools, and if you don't know how to make them yourself, buying them can be quite expensive, very expensive indeed. So if it's just to replace the chips on your own graphics card, like upgrading from 2 to 4 or from 4 to 8 Gigabytes of video memory, don't think about it, buy yourself a graphics card with that amount of memory.

First of all, there are 3 types or categories of cards.
the standard version, the Super version and the TI version. And here, for instance, compared to a Super version, a TI version will have a maximum number of chips. The Super version will have a lower number, and the Base version will have the minimum number.
So a basic graphics card, like a GTX 1650, has 4 chips. And with this, as for the GDDR5, in terms of maximum capacity per chip, it is 1 Gigabyte, so with 4 chips, you're already at the maximum possible memory.
With once again the Base version from 2019, which was equipped with GDDR5 memory chips,
Now if you have the GDDR6 version from 2020, with the 4 GB, then with this one, yes, you can currently upgrade it; the maximum capacity per chip is 4GB, so it can go up to 16GB.
But this can only be done once again with the GDDR6 version.

If you have a GTX 1650 Super version, it already has 6 slots for chips. And this version is already equipped with GDDR6, and only 4 memory chip slots have been used.
https://www.techpowerup.com/review/zotac-geforce-gtx-1650-super/3.html

So here, by buying 2 additional 1GB chips, you can upgrade it to the 6GB version, which is the amount of video RAM that a GTX 1660 Super has.

Currently, for GDDR6, the 4GB chip exists, and so just by swapping the original 4 chips, once again identical to the Base version of the 1650 equipped with GDDR6, you can upgrade it to 16GB.
And equipped with 6 chips, you can have a variant with 24GB of GDDR6.

And the Ti version? For the 1650, in 2019, a TI version was indeed announced, but for now, the only existing TI models are those found in laptops. And with this version, it’s 4GB VRAM. So here too, since it’s GDDR6, you can upgrade it to 16GB.

But this will only be a small part of the work because yes, of course, on YouTube you can find videos showing people changing their memory chips and just showing the result with the amount of memory either in a game, or through a Benchmark, or even Techpowerup GPU at the end of the videos.

But if you want to change an RTX2080 TI from 11GB to 22GB, well yes, there's this video from a Russian guy, where he states that you also need to change other components.
And like him, this is not the first time he does it, plus he works in an Electronics workshop for repairs, so I leave it to you to watch, and activate the translation, translate rather into English, in French certain words will quickly become incomprehensible.
https://www.youtube.com/watch?v=8IY_bfOyARQ&t=534s

And of course, you also need to modify the BIOS, like for example, the old GTX 550 which was just known for having a maximum of 1GB of GDDR5 memory. Of course, now there is the GTX 550 version with 8GB. Since 8 memory chips.

These memory chips are not expensive to buy, around 5-10€ per chip, so a quick calculation, 5x8 = 40€ for the GDDR5. And of course bought in China.
And so for the models that require changing additional components, let’s say at most we’ll be around 30-40€, but here I’m really looking at the prices broadly.

But the most expensive part, yes, it’s the tools used to heat the chips to the right temperature.
The cheapest version is to use a heat gun, but here you need to find the right height to reach the degrees, not overheating, and also not leaving it too long with the heat.

But will you really be better off changing your own memories on your graphics card, instead of buying a version containing that number of gigabytes of video RAM???