Mostly bug fixes and new game profiles, which are not always geared toward SLI. The "game ready" updates are not always the latest word on any particular game, because the bug fixes can be a bigger item than any single game profile. I usually tell people to get the update from their manufacturer, because the lag involved from a GeForce release to a EVGA release (just as an example) may reveal any issues that Nvidia might have missed. The problem then became that some manufacturers either introduced a bug, or just mirrored the Nvidia drivers. So, you don't always gain anything doing that.