This is why on consumer land you are pretty much always buying your memory as a kit (of 2 modules with DDR5). And if you want more you buy a bigger kit and sell your old ones or throw them in the trash.
On server side the memory controller on the CPU is much more beefy and the motherboard better built to allow for more memory sticks to run at full speeds. But even then you usually have to go and find memory that the OEM qualified/teste for you.
Modules have been added in pairs since forever due to motherboards being able to use dual channel. Except on the cheapest cheapest options (not all laptops).
That doesn't mean you can't add more than one pair.
Did that change with DDR5?
Also note that this CAMM module is already dual channel. You don't need pairs any more.
Is that why everyone is complaining about ddr5 prices? Atm I'm fine with my ddr4 box and will probably still be for the next few years.
Tbh the last time I've seen a noticeable difference from memory speed was when I overclocked my ram (and system bus!) from 66 to 100 Mhz. Back in the pentium 1 / amd k5 era, i believe.
I do have a feeling what you're describing only means 5 more fps in some benchmarks...
And last, a friendly reminder. If your working set doesn't fit in ram you're screwed no matter what your ram speed is :)
For example 64gb from Samsung for 350€ https://www.dateks.lv/en/cenas/atmina-ram/1028642-samsung-64...
I think they go up to 512gb per single module these days. The really big ones are really hard to buy for us mere mortals but you can get them through various data center/enterprise hardware vendors.
You're running a signal at 2.4+ GHz (commonly 3 GHz for DDR5-6000) over 288 pins over several centimeters simultaneously, it's not pretty.
Even with the same module, syncing up 4 modules to rated speed is going to be a challenge to boot, let alone have it be stable. If you want density, a platform that supports RDIMMs is the way to go with DDR5.
It's nice that it takes less space than two SODIMM slots but if you only get one module on a desktop motherboard you're still at the mercy of memory module makers when you build new (1) and have to pay more than you should for upgrades (2).
(1) Last desktop I built i used 4 x 16 dimms instead of 2 x 32 because I needed it yesterday and that's what was going to get delivered in 24 hours. If the mobo had just one camm module i'd have had to either live with 32 or deal with the delays.
(2) You get your one camm module motherboard, put 16 G ram on it because that's what all the games demand these days and you believe in Santa, then realize you need 32 to have any chance of running a browser or discord while playing, pay for a 32 G module, throw away the 16 G... the only happy entity is the memory seller.