MSI's dust removal technology. Available on the company's "Lightning Xtreme" edition of the GTX580, soot is annihilated by spinning that card's fans at full throttle in reverse for thirty seconds after boot. That's apparently an effective method for flinging accumulated grime off the spinners and (hopefully) into a spot you can actually reach. Unconvinced it'll work? Well then, mosey on over to the source link bub, and prepare yourself for video proof of the fan-powered filth evisceration.