I would say to use the version that comes with your mobo, but that's just me. Personally, when it comes to mobo drivers, I will ONLY use official drivers posted on the company's website (in this case, NVIDIA). This is for the simple reason that the mobo is the "central point", if you will, of the computer, and beta drivers are usually buggy and don't include the greatest optimizations. This, combined with the fact that I am using an nForce3, is the reason I am still using the official 5.10 drivers. Video drivers on the other hand are a different story, as many people like to use different versions to see what fits best for their requirements. Personally, I am using the 67.66 drivers from NZONE, and I currently recommend those drivers over the official 66.93 set simply because the 67.66's give me better performance in games versus the 66.93's. So, until NVIDIA comes out with an official driver on their website that supports the nForce4, I would suggest holding off on any driver upgrading, unless you feel a bold urge to do so.