Chinese manufacturer Colorful is known for its graphics card modifications, but its latest piece of work is pretty impressive. The iGame GTX 680 starts with a 28nm Nvidia GeForce card, as a lot of graphics board makers do. From there, it skips the usual fan in favor of two detachable aluminum fin heatsinks and a total of 20 heat pipes. It's the first time we've seen passive cooling made possible on a high-end graphics card like the GTX 680, as well as a testament to Nvidia's power efficiency this time around. Removing the fan makes operation silent, and Colorful promises some overclocking is possible, although we're not quite sure what that means on a variable-speed card like the GTX 680. On the other hand, the setup is pretty massive: it looks to take up at least three PCI slots, compared to the standard card's two. Colorful first showed off the iGame card at Computex, but we're still not sure when or if it will be released or even how much it weighs.