He used two of just released Gainward PowerPack Ultra/3550PCX (7800GTX 512MB) Graphics cards in SLI. The boards were overclocked to 779 MHz core and 2052 MHz memory and the chap managed to get the highest 3Dmark05 score ever.
You can check how those guys got to this score but it's not something that you can run for 24/7 but it sure is something that you can run to get the top 3Dmark05 score. Pictures are here but you can find the official scores at Futuremark's ORB site. And yes, those guys use to be called mad onion. µ
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