Jock,

I don't recall what size Rick was rendering, but I typically do 4000x or 8000x (with appropriately-sized other dimension) for print-quality images. My longest was the 900 hours I referred to earlier in the thread, and that was for a 4000x3000. My current 8000x5667 has nine more hours to go, for a total of about thirty.

It's a good thing we're not trying to render fractal animations for film quality.

--Damien