Here's the iguana model final rendered with octane v0.6alpha.
The model and textures are made by massimo righi: http://www.massimorighi.com/portfolio.htm
3032460 triangles (pre-baked displacement)
settings: pathtracing, maxdepth = 16
lighting: HDRI map
rendertime: 7 minutes and 13 seconds
speed: approx. 2.12 megasamples/sec
GPU: Geforce GTX260