A couple of years ago ... full fledged gaming desktop computer couldn't max out GTA IV. These rMBP with the 2 GB 750m can max all settings and it runs smooth. (I don't know where I could see fps, but I don't feel like I have turn down some settings) Maxed out, the game taxes about 1.5 gb of VRAM according to the game. Thanks Apple for not being cheap and giving us the 2 gb VRAM instead of 1gb I do think there is an issue in bootcamp because the NVIDIA update installer doesn't recognise the 750m. This means Apple messed up something in the EFI? I'm currently using outdated drivers because of this.