Soldered RAM upgrades void the whole warranty.

Yes, almost always.

Manufacturers consider soldered RAM part of the motherboard. If you try to replace or upgrade it—by desoldering the old chips and soldering new ones—you’re physically modifying the board. That’s treated as damage, not an upgrade. The entire laptop warranty goes out the window, not just the RAM.

Companies like Apple, Dell, and Lenovo explicitly say any board-level repair voids warranty. Even if you’re careful, they’ll flag it during any service. So no, it’s not just the RAM warranty—it’s the whole thing.

If you need more RAM, buy a laptop that uses socketed modules or get the configuration you want from the start.