Great!
Just one concern (maybe I am looking wrong tho), when I look on each ones website they show they both the same height?
Sapphire R9 380X
Gigabyte G1
The height is 41mm which is the 'thickness of the card when you lay it flat on a desk. The width is the figure you need to look at. The reason why the sapphire is wider is due to them using 100mm fans while most other cards like the gigabyte use 90/92mm fans. Look how much further the sapphires pcb/fan shroud extends past the backplate that you attach to your chassis.

