Oh this is entirely different than soldering the ram to the motherboard (which is really common on pc laptops now too, it’s harder to find one with sockets now than it’s ever been!).
The ram is inside the cpu. The processor isn’t “just” a cpu (although you can’t call even the old pentium “just” a cpu, they do so much nowadays!), it’s got the video card, bus controllers, ram and all kinds of other stuff built into that one IC!
It’s a SoC, System on a Chip, just like the processors that run phones and tablets and stuff.
Maybe industry specific stuff like photoshop or something.
Web browsers and normal stuff will keep on trucking as long as the os has a valid root certificate.