I just read an article about an american scientist who traded his supercomputer for 8 Sony playstations.
These linked playstations provide him with more calculation-power than the supercomputer does! Sounds like a good solution for me too cause my pitty dual-intel-Mac can't cope with my designs anymore. The new poster I'm doing costs me about 6 hours production-time of which I spend about 5 hours waiting.
Anyhow here's a preview of the new design. I hope I'll finish the thing of around 3 in the night!