hey @bepe4d. Here is a screenshot of GPU-Z as well as octanebench showing no RTX option. I'm on driver 451.77. I"m running 2 2080ti in this specific machine (same exact cards and GPU-Z screen is identical for both) Is there a newer version of octanebench I should be downloading (this one says RTX at startup)? I remember having this same problem at the end of last year but can't recall what the issue was.
Intel i7-3930K, 64gb RAM, Asus X79 Deluxe mobo, 2x EVGA 780 6gb (for rendering), 1x PNY quaddro k4000 (for display)
Windows 8.1 x64, Maya 2014, Octane Render v2