Hi, I have recently got the baseline 2012 15" Macbook Pro. I have been playing some games on bootcamp, and I noticed that games like GTA 4 are reporting 458MB of VRAM instead of the supposed 512MB. Is that normal? Or should I go to an Apple store and request for a warranty claim? My Nvidia driver is 310.90 WHQL running on 32-Bit Win7. I have not checked rather this persists with other drivers. Both the nVidia control panel and Techpowerup's GPU-Z are reporting 512MB dedicated VRAM, but things like Steam big picture, GTA IV etc are reporting 458mb. Any advice?