Thanks very much for this great thread. I was wondering about this, as I've just purchased my MacBook Pro 13" early 2011 and upgraded it to Yosemite.This evening I've tested the above terminal command for 512MB > 1024MB on Yosemite 10.10.0. Graphics were already running at 512MB VRAM due to the MacBook having 16GB RAM.The initial result following restart: Boot was very slow, and upon login VRAM showed as. Terrible graphical performance.Next step was to recover my backup .kext and restart; 3MB issue persisted following restart.Then, downloaded and ran the following utility to repair kexts:This restored my original 512MB VRAM configuration. Next and original step was to get to 1024MBMy process on Yosemite to get 1024MB:1) Run the original terminal command in this thread for 512MB > 1024MB (and assuming you can replace this with the upgrade of your choice)2) Run the above-linked utility in this post directly afterwards3) Restart4) EnjoyGraphics now test successfully at 1024MB VRAM. Whether it will survive a software update - I'm not sure, but easy enough to repeat