Sam2014: You can trick Fallout 3 into thinking you have an
external graphics card.
I haven't tried it on the GOG version
Your milelage may very...
Heres the link:
https://www.nexusmods.com/fallout3/mods/17209/?
"....use this bypass pack to set up your fallout 3 game files to play on an intel graphics card.
follow the readme in the package to alter your game to get rid of all of those compatability errors by adding a few files to your fallout directory.
This workaround IS TESTED and i actually use this every time i play fallout. if it isnt working for you, feel free to comment and i will try to deduce the problem. I have released a detailed video tutorial to follow.
http://www.youtube.com/watch?v=zwb0Gijaj2A --
It's been almost two years since I posted this, and I can't say I'm surprised that it exploded as much as it did. I originally compiled this for my own use, as a one-stop-shop fix to the Intel Graphics issue, and only later passed it on to you all. Regardless of my intention, I'm glad I could help so many of you, nearly 40,000 total downloads, with the only complaints being from those who had made a mistake in the process. In conclusion, Fallout 3 is one of my favorite games of all-time, and I'm glad that now you all get to enjoy it with me....."
Cheers Sam. Thanks mate. I'll try it out.