Tech question if you don't mind--did Galaxy divvy up the extra memory in such a way as to balance out the memory channels (such as, 1 GB per each of the three 64-bit channels)? Or would that require changes to the hidden memory controller logic that only nVidia has access to?
The only reasonable configuration is 3 x 1GB. Otherwise you're talking about an impossible 2GB + 512 + 512 which is nuts.