I have to decide between the 2.2GHz white macbook SR or the 2.4GHz white macbook Penryn. I will need to computer for photoshop and aperture the most. I wont be using it for video at all. What i was wondering was if the 3mb of cache on the penryn macbook is going to slowdown applications such as these or if the fact that its penryn and .2GHz faster make up for this and/or make it quicker. I'm a little confused. Any help is Greatly appreciated.