Well, I let this one render all day Sunday on a stock Core2Quad Q6600. I stopped it after 27hours, but it was pretty clean in most places after only 12. There were just a few tricky spots (like on the left side handle) than I probably needed to review the materials and light setup to clean it up a bit faster.
I could also really use a new i7 machine (a 920 is about 2.3 times faster) and I think Thea really is going to fly on a networked setup.
But, I can certainly say that Thea is the fastest unbiased engine I've had the pleasure to use... and it's truly a pleasure to use!!
Which I gotta say is amazing for a pre-release 1 "beta"!
P.S. What's truly awesome is how fast Thea resolves an image in the beginning. Here's where the image was at after only 35min! And this is a tough scene with over 20 separate light sources, 15 of which are IES's!!