Quote - It would depend on the quality of your graphics card vs. CPU.  How can you benchmark?  

Anyway, there's no comparison between quality.  Octane is a phyically accurate unbiased render engine.  Firefly is not.  In the amount of time FF renders a biased, incorrectly lit scene, you can get full GI, with HDRI, caustics, and all kinds of realistic results with Octane.  You're paying for quality and speed.  Let's be real.

Try rendering in FF with one light.  Just one emitter light.  Then do it in Octane with Pathtracing or PMD kernel.  Realism will be unbelievably better in Octane.

 

Seems like you've got a lot of experience with comparing poser renders with their octane counterpart renders. So it should be easy for you to show us some of that amazing work and how long it took you too render in octane and how long it would take in poser.

I'm still dying to see those unbelievable better realism octane rendered poser images, so fari haven't seen them. I did see some good images in this thread (be it completely out of focus) and other threads (some of them quite grainy), but they weren't better what poser can do and I sure haven't encountered unbelievable realistic octance rendered poser scenes.

It wouldn't be a problem to compare benchmarks at all... get the same image.... let render engine x render it with a number of settings and then let render engine y render with similar settings. All we've done so far is talk theory, let's put some meat to it, I'm assuming people are not making up stuff as we go along, so it should be easy to show some results. So, let's move away from theory and hype and show some reality.

 

EDIT: I'm in the process of buying a new computer and if this is something worth pursuing, then I'd like to invest in it. I'll check out the luxrender images, but luxrender is much cheaper and is said to be going gpu as well as cpu..... here it comes, cpu for quality and gpu for speed. As for 10 times faster..... here we go again.... ten times faster compared to what? An i7? i5? i3? Core2Duo? Problem is that if you do some searching around the web the 10-15 times faster is diminished by quite a few people, claiming it's not and that's why benchmarks are lacking.

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Due to the childish TOS changes, I'm not allowed to link to my other products outside of Rendo anymore :(

Food for thought.....
https://www.youtube.com/watch?v=pYZw0dfLmLk