Valhalla is predicted to be the final (or at least scheduled) revision of the Xbox 360 before the next generation Xbox is launched. Apart from the possibility of the CPU and GPU being further reduced to 45nm reducing cost of production (which will help with price decreases in retail) it is believed that both the GPU and CPU will share the same piece of board together. The benefits of this (along with the reduced need for cooling systems with a much cooler 45nm chip) is that the entire internal board within the console takes up a great deal less space (possible as much as 30% less) and as such the Valhalla could lead to an Xbox 360 Slim version. The console having a redesign and being far smaller in height or width. Due to the Hard Drive limitations it is believe that it will be shortened along its long length rather than its narrower width leading to a machine upto 30% shorter when stood upright. With a smaller design, smaller cooling systems and lower power supply it is believed this could be the most reliable, smallest and quietest of the Xbox 360 family.
