The north bridge heatsink is made of aluminum and is anodized blue in color.
To ensure that the kit will be compatible with all motherboards there's three ways to install the north bridge cooler.
The first method uses push pin clips to secure it to the motherboard. The second method uses spring clips for motherboards with an angle near the North Bridge chip. And finally we have SEKISUI tape for the motherboard without mounting holes near the North Bridge chip.
For the south bridge SEKISUI tape is used to fasten the heatsinks to the chipset.
If you would like to control how much air flow the mini-blower fan uses you can install the fan speed controller. With the controller you can set the fan to a choice of three different speeds.
Installation is fairly easy, though you'll probably have to remove the entire motherboard to install the north bridge cooler if you use the push pin method.
Another little side note is we could not install the north bridge cooler on our ASUS A7N8X deluxe motherboard with the huge zalman cnps7000a CPU heatsink installed. The north bridge is positioned on the A7N8X fairly close to the CPU socket, and the Extreme Spirit north bridge cooler was too tall and didn't have enough clearance under the CPU Heatsink.
Once we changed the CPU Cooler to something more average sized the north bridge cooler installed with no problems.
The Extreme Spirit is nice bit of kit and is easy way cool your chipsets.
If your north and southbridge chips are running hot, you might want to check out the Extreme Spirit North and South Bridge Cooler.