Soldered RAM can be DDR5, but only if the laptop was made for it.

Yes, but only if the laptop motherboard and CPU support DDR5. Soldered RAM isn’t a different standard — it’s just physically attached instead of using a slot.

Laptops with soldered RAM are locked to whatever generation the manufacturer designed for. If it shipped with DDR4, you can’t swap in DDR5. If it shipped with DDR5, the soldered chips are DDR5. Same rules as socketed RAM, just no upgrade path.

Don’t assume soldered = outdated. Many modern thin laptops use soldered LPDDR5 or DDR5. Just check the spec sheet before buying.

No swapping generations if it’s soldered — what you get is what you’re stuck with.