In fact drivers are why I'd be wary about an update every 6 months; Intel are behind, AMD tend to lag, in reality it would be NV releasing up date and even their quality has been dropping a bit of late.
of late ?, the nvidia drivers have been my main cause for blue screens, kernel panics, x.org crashes and in win7/8 graphics driver restarts for the past 10+ years, its pretty much at the point where i'm very reluctant to update my nvidia drivers on a system where they appear to be working properly (as that seems to be pretty darn rare)