The bigger cards get the bigger cases we need, the less room for air to flow around, simple really. I dont like the casing on that card (well it looks like casing to me), i dont like the plastic bits on the vents the red plastic bits, if it wasn't so Duplo kids chunky Lego looking it would be great because it looks like it has a purpose to let air in and out. Another thing is that big cards look like value for money but i prefer the small ones they used to make, just a little add in that gave a lot of performance, i think they should put more effort on reducing the size like they do with a die size.