A while back we reported about how nForce 780i (or 680i v2) had been delayed and that the reason was poor Yorkfield support. Unfortunately it seems that the support is still lacking, but not as severe as before. At this time it is possible to run a retail Yorkfield processor such as the Intel Core 2 Extreme QX9650, but you can’t overclock it, not even one meager hertz. It seems that Intel hasn’t supplied NVIDIA with enough information on how to do this, and practically all nForce 680i out there use NVIDIA’s reference design.
Several sources have claimed that Intel wants GeForce SLI for desktop chipsets, NVIDIA isn’t giving it to them and in return Intel is not giving them complete Yorkfield specs. Perhaps a bit childish, but certainly a powerful move. nForce 680i is a far from liked chipset among overclockers, but since you’re forced to use it to run high-end GeForce SLI, it has still become quite common among the top benchers. Without proper support for Yorkfield, nForce 780i is doomed before it is even released.
Update:
We’ve been informed that there will be overclocking, not just by multiplier, with the final boards. Although, there’s no guarantee that it will work well.