01-03-2019 04:53 AM
Welcome to the Community Forums.
Similar to most laptops and AIO, if you check the AMD GPU chip would show that it is not socketed. It is soldered on-board so it cannot be upgraded therefore not possible to upgrade the GPU without changing the entire systemboard.
This option is usually not economically a good so most folks simply would invest on another machine that fits the graphics requirements of your need.
I hope this helps answer your query.
04-17-2019 10:57 PM
I don't think you're assessment is entirely correct. https://forums.lenovo.com/t5/Lenovo-B-and-G-Series-Notebooks/G505s-APU-Upgrade-failed/td-p/1551488 Despite the title of the 2014 thread, two members there were able to upgrade from AMD A8 to A10. "I successfully upgraded my Lenovo G505s-20255 from an AMD A8-4500m to an AMD A10-5750m ES (Engineering Sample)" "There has been only a problem with a used AMD A10-4600M from ebay. I ordered a new one and since then my A10-4600M works in my G505s notebook" They don't specify whether any solder work was involved. These may have been highly skilled technicians (one with an engineering sample, no less) But whether soldered or socketted, I think the requirement of a new motherboard is just plain wrong.
The better answer would be that AMD A10 is the highest rated processor these notebooks were designed to work with, and even then there are heat problems (perhaps you are a bit shy to acknowledge problems in the A10 stock notebook?) Ryzen I'm pretty sure would be right out. So, right answer, but wrong explanation.
I've learned not to trust "official" documentation or spokespeople on matters like these. What can physically be done, and what companies are willing to support (or take liability for), can be two very different things.
Cheers! and happy hacking!