I'd have the same question, really. My own rig with a 3.00 GHz quad + 3870X2, scores about 16k-ish on 3DMark06 with the latest drivers. With the increase in guts that the 4870 generation is supposed to have, 21-ish seems pretty reasonable for the 4870X2. But a 21k score on a single core card, nevermind those other scores - DAMN.
Mind, there's been some claims that they've finally figured out how to make two cores use the same video memory, which might make a big difference if they were true.
__________________ i7 2600K | ASUS Maximus IV GENE-Z | GTX Titan | Corsair DDR3-2133
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