The way to not get RROD is to keep it off the ground or a desk, may it elevated, so all of the air vents work, because the original xbox 360 had cooling issues, you had to keep it off the ground, so all the air vents could work fully, which is why mine is on top of a box with holes in it, DONT put it on its edge though, as sometimes the disc falls out of the disc tray, and your xbox won't work.
The silm is much better with more air vents, so it obviously works much better.
Hope i helped.