These last weeks I was testing two versions of Mandriva 2010 Spring: 32 and 64 bits!
After testing the same compiler parameters, I got a little better performance under 64-bits enviroment. Games like CAPCOM ZN-1 and ZN-2 and others like Tekken 3 and Gauntled Legends are running at 100% without frameskip. Of course, my processor is a Phenom II Quad 3.4 Ghz, and this help, but at 32 bit these games runs about 89-93% speed only!
I'm thinking to move the next PIAPARA LiveCD release to 64-bits now. What do you think about it?