these results are with Coppermine core, but they are under P3 500Mhz Katmai core result table (Coppermine is more overclockable and with full speed cache, Katmai is with half speed). results taken from this link: http://hwbot.org/ResultBrowseByProcessor.do?cpuModelId=1006
CPU-Z.:
http://hwbot.org/result.do?resultId=574128
http://hwbot.org/result.do?resultId=602373 = no verification url or image
http://hwbot.org/result.do?resultId=619071
PiFast.
http://hwbot.org/result.do?resultId=619072
http://hwbot.org/result.do?resultId=595982
SuperPi.
http://hwbot.org/result.do?resultId=619073
http://hwbot.org/result.do?resultId=595983
http://hwbot.org/result.do?resultId=574125
SuperPi 32m.
http://hwbot.org/result.do?resultId=619293
wPrime 1024m.
http://hwbot.org/result.do?resultId=619368
wPrime 32m.
http://hwbot.org/result.do?resultId=619074