I have been thinking about stepping up from my MBP 13" to a top spec imac but looking at the specs see that the GPU fitted is what I would class as incredibly out of date and can bought for about £75 new. This is really putting me off thinking about buying one and considering the imac was only "updated" not long ago does anyone know Apples logic for fitting such an old GPU? The 5750 is about 6 generations behind the latest. I realise GPU's get released constantly but not that quickly so that this new imac is this far behind. I wanted to use a mac for heavy photo and video and the odd gaming and although the 5750 is sufficient it just bugs me that I know it's a "budget" card. Any opinions?