Stepping up to nForce 4 SLI gives you all the features of the nForce 4 and nForce 4 Ultra, and you get the coveted SLI feature. If you are shooting for this you are a gamer, but DCC boxes with SLI Quadro's will come to market. Nvidia would not comment on dual nForce 4 chips on one board, nor whether 2P Opteron boards are coming. SLI steps you up for $200 or more for your board purchase so it won't be the comparatively cheap upgrade I enjoyed back with 3dfx and my two Pure 3D 2s.

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