AMD's CTO Mark Papermaster may have just dropped a minor graphics bombshell at the end of the AMD Fusion Developer Summit. His presentation was officially to show off the FirePro W9000, a beast of a workstation graphics card with 6GB of GDDR5 memory, a 264.8-megapixel fill rate and four teraflops of single-precision math. While the screen behind him showed the one-fan FirePro card, however, he was clearly holding another, three-fan card in his hands -- and though it could be that the W9000's cooling system went through a major revision between presentation slide and production, it may be a clue to a gamer-friendly Radeon part instead. Attendees like Tweakers.net have reason to believe it might be the Radeon HD 7990, a long-rumored dual-chip version of the 7900 series for the very upper echelons of gamers. If so, the bets are on it keeping up the tradition of having two slightly underclocked versions of AMD's fastest chip (here the Radeon HD 7970) working in tandem to produce a big leap in speed despite occupying the same two card slots. AMD hasn't set the matter straight with either a yea or a nay, but with NVIDIA's GeForce GTX 690 largely cornering the high-end market unopposed, it's tough to picture AMD simply twiddling its thumbs.