Testing on noise control for DSLR

Recently thanks to Kelvin for giving me his cooler box, my DSLR has been pimped! lol
The cooler box is a peltier cooler that gives about 13 degrees Celsius below ambient temperature.
I took 2 darks to compare the noise. Both are taken in the same conditons only cooled or uncooled.
Notice how "colourful" the uncooled image is.

Cooler box