Hello,
here are the numbers. Now not sure if these are accurate, as I did not sit to watch the whole render cycle on each setting. I did notice though, that Blender did not give me a time remaining value. I don’t know how to set it to show one either. So the times I wrote down were found next to the word Last.
My Machine:
OS: 10.10.5
CPU: Intel core 2 duo 2.4 ghz
GPU: ATI Radeon HD 2400 XT 128
Memory: 4 GB 667 mhz DDR@ SDRAM
BMW render speed test
GPU: @ 64x64 tiles 54.95
@ 128 Tiles 20.30.15
@ 560 7:49.3 (I assume this is hour/min)
@ Full Resolution 5:08.9
CPU: @ 64 1:43.49
@128 1:03.44
@ 560 51.05
@ Full Resolution 2:37.11