I'm using my D7000 SD cards with my new D600 and I think I'm running into data write bottlenecks. It makes sense since the file formats are larger coming from the D600. The cards are slow by most standards but seemed to work okay with the D7000. They are Sandisk Ultra 32GB at 15mb/s. I'm moving to Sandisk Extreme 32GB at 45mb/s. Hopefully that will allow more shutter actuations when I call on them.
What data cards (speeds) are you using with your D600?
What data cards (speeds) are you using with your D600?