What about something from these chaps
caustic.com/

(btw, can I hound you for lighting tips; I dabble in CGI [see the CGI frontpages in my profile], but I really don't have a clue)
( custard, Sun 14 Jun 2009, 11:03, archived)

Oh, a raytracing graphics card,
I was wondering how long it would take for those to come out.
I'd have to see if I could get Povray to use it. Still waiting for the multi-core version to come out of beta, grrr.

I only really dabble in it myself.
( Moon Girl Technologies horrendous beanbag, Sun 14 Jun 2009, 11:09, archived)

I did see something a bit more spectacular than a just a graphic cards a while back
was a standalone box that could host up to 24 little ray tracing co-processors, but google came up blank
( custard, Sun 14 Jun 2009, 11:16, archived)