So I’ve done a bit of looking around and it seems that the reason Unity is not using the 8gb of ram I have is because Unity uses DirectX 9, I’m an artist, so this information isn’t of much use to me. Is there a workaround for this? Surely this is a common problem for Unity devs?
Unity is a 32bit application, so the max it could address is 4GB, if it is on a 64bit OS
PS: Your title has an error as you mention VRAM instead of RAM 
Ohh, hmm, I didn’t know there was a difference hehe 
I’m trying to get to the bottom of that VRAM issue you pointed out on my last post http://forum.unity3d.com/threads/79849-After-buying-Pro-my-framerate-has-dropped-considerably
Seems I have a bit more research to do tho
Ah, I see now, it seems one of my graphics cards has 512mb ram and the other is 256mb, sort of disappointing, is this far below average?
Not really, 512mb on the standard for physical VRAM for current generation, half a year ago it was 256mb.
But that should normally not be a problem as half a GB of VRAM is quite a lot to hold rendering data. Keep in mind that stuff thats not rendered at the time etc resides in the RAM if the VRAM can’t hold them, you normally hit the RAM border before you hit the VRAM border
Ah, so not so disappointing after all hehe. Thank you Dreamora you’ve been very helpful :]