Curious Labs specified our minimum system requirements after extensive testing. Poser 5 may or may not run acceptably on machines that do not conform to the stated minimum requirements I think what he was asking is if it will in fact run at all at 333. No one expects it to run well. There is a big difference between running "unacceptably slow" and not being able to run at all due to hardware limitations. A lot of people can get by, satisfied with render speeds that would make owners of faster computers pull their hair out. Any computer can seem to be running acceptably fast to someone who has not experienced anything faster, and different people have different thresholds of tolerance/patience for slower hardware ("acceptable" is subjective). -Adam