original 500mhz vs celeron 667

can any body tell me which is the best. either 500mhz or 667 celeron runs epsxe betteri want to buy 500mhz original in place of 667mhz celeron.for the reason that original has more cache size than celeron.and it is almost twice faster than celeron processor.one more thing which is strange that my sound blaster live value card was running with 667mhz celeron perfect when i bought it.but now it is not installing.but when oringinal 500mhz processor was used my sound blaster was easily installed on my pc.what is going on and it is the main reason i am changing my processor.