Multi-core and latest GPUs won't have any effect how Blitz3D runs because it's based on DX7 tech.
Fast (singlecore) CPU will help a lot because for example skinning is done with CPU AFAIK... faster RAM would have minimal effect too.
Good monitor will impact the ROCK value most because then the stuff at least CAN look good ;P
Fast (singlecore) CPU will help a lot because for example skinning is done with CPU AFAIK... faster RAM would have minimal effect too.
Good monitor will impact the ROCK value most because then the stuff at least CAN look good ;P