Soldered RAM SPD is usually invisible to software.

The short answer: probably not. Tools like HWiNFO, CPU-Z, or RWEverything can read SPD from removable DIMMs, but soldered LPDDR memory is a different beast. The SPD data is usually stored on the RAM chips themselves, but the system firmware often does not expose it over SMBus the way it does for socketed modules. Some laptops let you see it via BIOS or vendor utilities, but most don’t.

If you are trying to confirm compatibility before upgrading soldered RAM—that’s not a thing. Soldered RAM cannot be upgraded. You’re stuck with what you bought. If you mean you’re upgrading the whole motherboard or system, the SPD data matters less than the chipset and CPU support list. Use a tool like HWiNFO to check your current memory configuration, but don’t expect to read exact SPD timings from soldered sticks. Your best bet is to look up the laptop’s service manual or specs from the manufacturer.

In short, don’t rely on software to read SPD from soldered RAM. It’s not designed to be read that way, and if it were, you still can’t upgrade it anyway.