>>11
Ray-tracing does not scale at all.
What the fuck are you talking about? Across multiple machines, it scales linearly. Tile the image in 32x32 blocks and do every n-th tile in one machine.
If you're doing video, just divide by frames (or even scenes for longer stuff).
Adding more machines doesn't improve memory latency.
This is the most retarded thing I've read today. Adding more cores doesn't improve frequency, why do multithreaded compute-bound programs run faster when you add more cores? Adding more hard disks doesn't improve their individual capacities, why can you store more data?