it's time:
first was LuxRender
- 0.8 support a GPU (under Linux - AMD Radeon)
- ~2.5 times for AMD Athlon X4 (2.7GHz) vs NVidia GeForce GT460
Indigo since 3.0 also support GPU
- CPU: 103025.85289 samples / second (9.70630 micro-seconds / sample)
- CPU+GPU: 225543.72788 samples / second (4.43373 micro-seconds / sample)
also a bit more than 2 times speedup for such hardware
only Maxwell render not support GPU (yet, I guess)
