Solved – I think.
In the “About Resolve” app display Resolve shows the number of GPU’s it’s using, and at app start, Resolve will popup a warning if it’s using the same GPU as the displays.
My About display says I have one GPU, and startup shows no error, so I guess we can assume that Resolve is using the GTX570.
Now I just need to figure out why I’m only getting ~23fps with h.264 clips with minimal grading…
Tim Tyler