my sempron 3000+ scores a passmark rating of 410, the amd 64 3800+ scores 559, and the amd 64 4000 + scores 590 now the highest amd 64 single core processor is the amd 64 4000+ and that's the performance difference between the two the performance differrence between the two is only 180 and the sempron 3000+ is considred a low end processor while the amd 64 4000+ is considered a mid to high end processor with only a 180 performance difference and the sempron is used for every day tasks and the 64 is used for hard core gaming with only that much performance difference then that means there is not so much performance difference between the single core 64's and the sempron's after all then why do people say sempron is bad i mean today's benchmark proved to me that the 64 is no greater than the sempron