While we've covered steampunk mods in other articles, this particular rig is simply called Steampunk, and was created by korko czong over on Mod Planet.
According to a rough Google translation, the project originally began as a simple water-cooling implementation. However, the approaching holidays offered the modder a little free time that he eventually used to implement new ideas. Before long, the cooling project became a full-fledged modification. As seen above, the pipes aren't installed just for looks--they actually provide the rig's liquid-cooling system.