Apple G4 (Silver Bullet for those who care) 867 MHz PPC, 1.5 G RAM, OS X 10.2.6 Poser 5: 980 seconds. this sucked. of course, my machine doesn't break the Gig barrier, BUT... when i increased the block size from whatever you had it at (i think it was 30) to 500, my render time improved to 654 seconds. not GREAT, but closer to reality.