The Sapphire X1950 Pro Dual is a pair of X1950 GPUs piggybacked on one circuit board.  Unfortunately it seems to be a paper release, as there is nowhere to buy it, and it is not listed on the Sapphire website.  Still, HotHardware managed to get their hands on one and benchmark it.  While it does offer good performance, it has difficulty pulling ahead of the DX10 8800 GTS 320 MB and trouble fitting inside most cases.
“We’ve just evaluated the features and performance of Sapphire’s unique Radeon X1950 Pro Dual. As its name suggests, this card has a pair of Radeon X1950 Pro GPUs on a single board. It also has 1GB of RAM and an insanely large cooler and PCB. Head on over to the site and check out this behemoth…”

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