I grabbed a cheap Intensity (not the Pro with analog) card for a spare tower to play around with utilizing an inexpensive calibrated 709 HDMI monitor in a small work space vs the decklinks and found that I can only get results with 1080i59.94 output. It does seems to also support 10bit out.
The rig looks like this:
Mac 4,1 w/ 16GB and 4TB SW Raid
I've tried swapping the 2nd rocket to slot 4, removing it, different project sizes but I only get results with 1080i59.94. I wouldn't be surprised if this card only supports that output, but it's strange that no one mentioned it before.
Any options for us working in 23.98 projects? I'd love to have this beater station for tight quarters that want to monitor out.
Figured it out for those interested. Here is what I did. I actually improved my Candle test results by 4FPS by making these adjustments. I now get realtime 5K 2:1 with a few nodes (haven't managed to slow it down yet with enough nodes). This is now with GTX570 (1.2GB), Rocket, Intensity and a 250MB/s SW RAID.