

SPPM is Stochastic Progressive Photon Mapping for quick direct+indirect caustics.
Running "new" Windows 7 x64 SP1 with [email protected], RAM DDR4@3600MHz and EVGA GF GTX 980 Ti SC+@all stock speeds (368.39WHQL-HQ), I got average 231 Mphotons/s after 60 seconds benchmarked despite old demo: But this demo is not a GPGPU (OpenCL or CUDA...).

<3

GPU SPPM demo (2010) download ->