Recreating this post as my original one was removed because it also mentioned DirectX 11 support. Currently, VRAM is restricted to 2GB. Video memory is important in gaming for support of higher resolution textures. For games like Skyrim and Fallout, the ability to increase VRAM (assuming sufficient host memory) to a minimum of 4GB improve the support for enhanced textures. Unless there's a technical reason to implement a maximum, why limit? The comment made when the original post was removed mentioned the feature was tied to higher resolution support on Macs. Retina displays are pretty high resolution, and I'm typing this on a 5k iMac. But note that even with non-retina 2560x1600, games like those previously mentioned benefit from higher VRAM to support improved 2k textures. This doesn't seem to require a new feature, so much as to remove the existing limitation of 2GB.