You can download the new version of Hydra renderer here:
Comparison of rendering convergence on the Conference Room scene within ~1 minute using Progressive Path Tracing (PPT) technique.
VRay RT vs our renderer (code named Hydra) running in Progressive Path Tracing mode (PPT), rendered at 1024x1024 (1 MPx) on a PC configuration Core i7-3770 (3.4 Ghz), 16 GB Ram, NVIDIA GTX680.
Disclaimer : since VRay RT and Hydra use different materials, it’s very difficult (and maybe impossible