To get the GPU recognized, you'll need to edit a two files called graphicscards.sgr and graphicsrules.sgr, which are both located in the Sims 3 program files. For an Origin install, the default file path is:
Program files (x86)\Origin Games\The Sims 3\Game\Bin
Note: These instructions only apply to and will only work for the original poster's graphics card. If you'd like help getting your own card recognized, please post the same information from deviceconfig and ask for help.
Open graphicscards.sgr (Notepad works fine), and crtl-F to search for 10de. That will take you to these lines:
vendor "NVIDIA" 0x10b4 0x12d2 0x10de
card 0x0fd1 "GeForce GT 650M"
card 0x0fd2 "GeForce GT 640M"
Create a new line under the "Nvidia" line, copy this text, and paste it in the new line:
card 0x134d "GeForce 940MX"
So you should now see this:
vendor "NVIDIA" 0x10b4 0x12d2 0x10de
card 0x134d "GeForce 940MX"
card 0x0fd1 "GeForce GT 650M"
card 0x0fd2 "GeForce GT 640M"
(with indents from spaces that this site isn't displaying properly). Save, quit, and open graphicsrules.sgr. Crtl-F and search for 8800, which will take you here:
elseif (match("${cardName}", "*8800*") or match("${cardName}", "*9500*") or match("${cardName}", "*9600 GSO*") or match("${cardName}", [etc.]
Change the bolded 8800 to 940MX. Don't change anything else, not even the asterisks. This will classify your card as uber.
Finally, scroll back to the top of graphicsrules, and look for this, 8-10 lines down:
if ($textureMemory == 0)
seti textureMemory 32
setb textureMemorySizeOK false
change the 32 to 1024, and add a # and a space in front of setb. Your card has more VRAM than that, but TS3 can only use 800 MB anyway. The lines should look like this:
if ($textureMemory == 0)
seti textureMemory 1024
# setb textureMemorySizeOK false
Launch the game once to refresh the deviceconfig.log. You'll know it worked if you see a [Found: 1, Matched: 1] next to the card name in deviceconfig, and texture memory listed as 1024 instead of the current 32 MB override. If the edits don't work, please repost that same section of the deviceconfig.
